Strong-Drive® SDWC TRUSS Screw (2022)

  • Home
  • Fastening Systems
  • Screws and Nails
  • Interior Wood Screws
  • Strong-Drive® Interior Wood Screws
  • Strong-Drive® SDWC TRUSS Screw

Strong-Drive® SDWC TRUSS Screw (1)

On This Page

Strong-Drive® Interior Wood Screws

This product's information may differ depending on the category of use. You are currently viewing details related to Strong-Drive® Interior Wood Screws. You can also view product information related to the category:Fasteners for the Quik Stik™ System

Product Details

The Strong-Drive SDWC Truss screw provides a stud-to-bottom plate or stud-to-top plate connection as well as fastening trusses and rafters to top plates. The full-threaded shank engages the entire length of the fastener, providing a secure connection. The SDWC is tested in accordance with ICC-ES AC233 (screw) and AC13 (wall assembly and roof-to-wall assembly) for uplift and lateral loads between wall plates and vertical wall framing and between the top plate and the roof rafters or trusses. It is code listed under IAPMO-UES ER-262 and meets 2018 and 2021 IRC® and IBC® code requirements for several common wood framing applications.

Key Features

  • Fully threaded shank engages the entire length of the fastener, providing a secure connection between the roof and wall framing members
  • Cap-style head countersinks fully into the double top plate to avoid interference with drywall or finish trades
  • Wide tolerance on installation angle makes it easy to install the SDWC correctly
  • Can be installed from inside the structure, eliminating exterior work on the upper stories and enhancing job safety
  • Fastening can be performed before or after exterior sheathing is applied for added flexibility
  • Metal installation guide tool (included) to help ensure proper installation
  • Matched-tolerance driver bit (included) engages fastener head securely to allow one-handed driving (replacement bit part no. BIT30T-2-R2)
  • Orange color for easy inspection
  • Type-17 point for faster starts and easier driving
  • SDWC15450 is recognized for use in chemically treated wood as described in the evaluation report

Applications

  • Truss/rafter-to-plate and stud-to-plate connections

Product Includes

SDWC15450-KT and SDWC15600-KT contain:

  • (50) Strong-Drive SDWC screws
  • (1) Matched-tolerance driver bit (part no. BIT30T-2; also sold separately)
  • (1) Metal installation guide tool
    • SDWC-GUIDE (for SDWC15600 only)
      or
    • SDWC-GUIDE275 (for SDWC15450 only)

SDWC15450B-KT and SDWC15600B-KT contain:

  • (500) Strong-Drive SDWC screws
  • (2) Matched-tolerance driver bits (part no. BIT30T-2; also sold separately)
  • (2) Metal installation guide tools
    • SDWC-GUIDE (for SDWC15600 only)
      or
    • SDWC-GUIDE275 (for SDWC15450 only)

Related Links

  • Fastening Systems Technical and Installation Notes
  • Installation Detail Drawings
  • Recorded Webinar: Drive a New Path: Resisting Uplift with Structural Fasteners

Catalog Pages

Fastening Systems CatalogC-F-2019A catalog including new product information as well as any applicable specification and installation instructions for Simpson Strong-Tie® fasteners and Quik Drive® systems.Catalog

Product Information Table

Fastener Production Information and Stuff & Things

Model No. Coating/Material Length (in.) Shank Diameter (in.) Drive Type Head Type Thread Length Point Type Color Packaging Qty.
SDWC15450B-KT E-coat® Electrocoating 4 1/2 0.152 T30 6-Lobe Cap Head 4 1/4 Type-17 Point Black 500
SDWC15450-KT E-coat® Electrocoating 4 1/2 0.152 T30 6-Lobe Cap Head 4 1/4 Type-17 Point Black 50
SDWC15600B-KT Clear Zinc Coating 6 0.152 T30 6-Lobe Cap Head 5 3/4 Type-17 Point Orange 500
SDWC15600-KT Clear Zinc Coating 6 0.152 T30 6-Lobe Cap Head 5 3/4 Type-17 Point Orange 50

Product Information Table

Model No. Length (in.) Drive Type Head Type Thread Length Shank Diameter (in.) Point Type Coating/Material Color Packaging Quantity UPC
SDWC15450B-KT 4 1/2 T-30 6-Lobe Cap Head 4 1/4 0.152 Type-17 Point E-Coat™ Electrocoating Black 500 707392902102
SDWC15450-KT 4 1/2 T-30 6-Lobe Cap Head 4 1/4 0.152 Type-17 Point E-Coat™ Electrocoating Black 50 746056235507
SDWC15600B-KT 6 T-30 6-Lobe Cap Head 5 3/4 0.152 Type-17 Point Clear-Zinc Coating Orange 500 707392888307
SDWC15600-KT 6 T-30 6-Lobe Cap Head 5 3/4 0.152 Type-17 Point Clear-Zinc Coating Orange 50 746056548027

Load Tables

SDWC — Allowable Shear Loads — DFL, SP, SPF

Strong-Drive® SDWC TRUSS Screw (25)

  1. Allowable loads are shown at the wood load duration factor of CD = 1.0. Loads may be increased for load duation up to a CD = 1.6.
  2. Tabulated values must be multiplied by all applicable adjustment factors per the NDS.
  3. The main and side members shall be sawn lumber or structural composite lumber with a specific gravity or equivalent specific gravity 0.42 to 0.55.
  4. Zpara — Parallel-to-grain loading in the side member and perpendicular-to-grain loading in the main member.
  5. Zperp — Perpendicular-to-grain loading in the side member and perpendicular-to-grain loading in the main member, except for 2x (edge) where main member is loaded parallel to grain.
  6. The connection conditions of this table are for specific intended applications. Reference lateral design values for all other shear connections are calculated following the NDS.

SDWC — Allowable Withdrawal and Pull-Through Loads — DFL, SP, SPF

Strong-Drive® SDWC TRUSS Screw (26)

  1. Allowable loads are shown at the wood load duration factor of CD = 1.0. Loads may be increased for load duration up to a CD = 1.6.
  2. Tabulated values must be multiplied by all applicable adjustment factors per the NDS.
  3. The reference withdrawal and pull-through values are in pounds per inch of the thread penetration into the main member and a minimum 1 1/2" thick side member, respectively.

SDWC — Allowable Roof-to-Wall Connection Loads — DFL, SP, SPF, HF — Single-Screw Connections

Size (in.) Model No. Thread Length (in.) Installation Allowable Loads (lb.)
DFL SP SPF
Uplift F1 F2 Uplift F1 F2 Uplift F1 F2
  1. Loads have been increased for wind and earthquake (CD=1.6); no further increases allowed. Reduce when other loads govern.
  2. The SDWC is to be installed through a double 2x top plate into a minimum 2x4 truss or rafter.
  3. The SDWC screws shall be driven such that the shank is fully embedded in the connection members, the head is in contact with or embedded in the side member, and the point does not protrude from the lateral surface of the main member. When embedded, the top surface of the head shall be no more than 1/8" beyond flush.
  4. An SDWC screw may be used in each ply of two- or three-ply rafters or trusses. The allowable uplift load for each screw shall be multiplied by 0.90, but may be limited by the capacity of the plate or the connection between the top plate to the framing below. SDWC screws in multi-ply assemblies must be spaced a minimum of 1 1/2" o.c.
  5. Screws are shown installed on the interior side of the wall. Installations on the exterior side of the wall are acceptable when the rafter/truss overhangs the top plates a minimum of 3 1/2".
  6. For Uplift Connection Load Path, the designer shall verify complete continuity of the uplift load path.
  7. F1 and F2 are the directions parallel and perpendicular to the wall, respectively.
  8. When a screw is loaded simultaneously in more than one direction, the allowable load must be evaluated using the unity equation: (Design Uplift ÷ Allowable Uplift) + (Design F1 ÷ Allowable F1) + (Design F2 ÷ Allowable F2) ≤ 1.0. The three terms in the unity equation represent the possible generated force directions. The number of terms that must be considered for simultaneous loading is the sole discretion of the designer and depends on the method of calculating wind forces and the utilization of the screws within the structural system.
  9. Table loads do not apply to trusses with end-grain bearing.
  10. Top plate-to-stud and top-plate splice connections shall be fastened per applicable Building Code.
0.152 x 6 SDWC15600 5 3/4 1 835 405 225 900 505 225 595 305 190
2 715 270 805 380 505 265
3
4
Compound Angle 615 245 225 645 360 225 485 235 190
Gable End 860 620 375 980 625 445 635 425 300

Strong-Drive® SDWC TRUSS Screw (27)

Installation 1 — Rafter/Truss Offset from Stud: Fasten Straight up Through Double Top Plate
Installation — Narrow Face of Stud or Over Header

(offset truss similar)

Strong-Drive® SDWC TRUSS Screw (28)

Installation 2 — Rafter/Truss Offset from Stud: Fasten from Front Bottom Corner of Double Top Plate
Optional SDWC Installation — Truss Offset from Stud

Strong-Drive® SDWC TRUSS Screw (29)

Installation 3 — Rafter/Truss Aligned with Stud: Fasten from Wide Face of Stud
Optional SDWC Installation — Two-Screw Wide-Face Installation Shown

Strong-Drive® SDWC TRUSS Screw (31)

Installation 5 — Rafter/Truss Aligned with Stud: Fasten from Corner of Stud
Optional SDWC Truss Screw Installation — Truss Aligned with Stud
(rafter aligned with stud similar)

Strong-Drive® SDWC TRUSS Screw (32)

Installation 6 — Rafter/Truss Gable End Installation
Optional SDWC Installation — Truss Aligned with Top Plate

(Video) Simpson StrongTie: SDWC Truss Screw and Quik Drive Explained
SDWC Rafter/Truss-to-Top Plate Connections Utilizing Two-Screw Configurations

Allowable loads for the SDWC Truss screws when installed from the underside of the top plate and from the face of the rafter/truss using a two-screw configuration per the detail configurations shown on the next page.

SDWC — Allowable Loads for Rafter/Truss-to-Top Plate Two-Screw Connections

Strong-Drive® SDWC TRUSS Screw (33)

  1. Loads have been increased for wind and earthquake loading (CD=1.6) with no further increase allowed; reduce where other loads govern.
  2. For Uplift Connection Load Path, the designer shall verify complete continuity of the uplift load path.
  3. When cross-grain tension cannot be avoided, supplemental reinforcement shall be considered by the designer.
  4. The SDWC screws shall not interfere with other fasteners or truss plates. Where truss plates must be penetrated for Configuration D, a Truss Designer approval is required in accordance with ANSI/TPI 1-2007 /2014, Section 7.5.3.4 and 8.9.2. To predrill through truss plate, use a 1/8" drill bit.
  5. The metal installation guide provided with the screw is angled at 22.5° and can be used for Configurations C and D; proper installation angles for all configurations are the responsibility of the installer.
  6. SDWC screws must be offset min. 1/4" from top plate splices for full values.
  7. Loads assume minimum overhang of 3 1/2".
  8. When a screw is loaded simultaneously in more than one direction, the allowable load must be evaluated using the unity equation: (Design Uplift ÷ Allowable Uplift) + (Design F1 ÷ Allowable F1) + (Design F2 ÷ Allowable F2) ≤ 1.0. The three terms in the unity equation represent the possible generated force directions. The number of terms that must be considered for simultaneous loading is the sole discretion of the designer and depends on the method of calculating wind forces and the utilization of the screws within the structural system.
  9. An SDWC screw may be used in each ply of two- or three-ply rafters or trusses. The allowable uplift load for each screw shall be multiplied by 0.90, but may be limited by the capacity of the plate or the connection between the top plate to the framing below. SDWC screws in multi-ply assemblies must be spaced a minimum of 1 1/2" o.c.

Strong-Drive® SDWC TRUSS Screw (34)

Configuration A: Truss Aligned with Stud Install through Top Plate into Rafter/Truss
Both screws installed at a 4° – 14° angle, offset 3/4" – 1 1/4" from opposite edges of the top plate.

Strong-Drive® SDWC TRUSS Screw (35)

Configuration B: Truss Offset from Stud Install through Top Plate into Rafter/Truss
Both screws installed vertically ±5° into the center of the rafter/truss from the underside of the top plate, 1/2" – 1" from opposite edges of the top plate.

Strong-Drive® SDWC TRUSS Screw (36)

Configuration C: Install through Top Plate into Rafter/Truss
Both screws installed at a 16° – 30° angle, offset 1/2" from the opposite edges of rafter/truss. Use metal installation guide included in screw kits for optimal 22° installation.

Strong-Drive® SDWC TRUSS Screw (37)

Configuration D: Install Rafter/Truss to Top Plate
Both screws installed at a 20° – 25° angle with a 1/2" – 7/8" offset from the opposite edges of top plate 3" ± 1/4" above top plate. Use metal installation guide included in screw kits for optimal 22° installation. To predrill through truss plates, use a 1/8" drill bit.

SDWC — Allowable Loads for Wide Face of Stud-to-Plate Connections — DFL, SP, SPF, HF

Strong-Drive® SDWC TRUSS Screw (38)

  1. Loads have been increased for wind and earthquake loading (CD = 1.6) with no further increases allowed; reduce where other loads govern.
  2. Allowable loads are for SDWC installed per the installation instructions.
  3. The SDWC15450 is to be installed through the face of 2x stud into a single 2x bottom plate over a concrete/masonry foundation.
  4. The SDWC15600 is to be installed through the face of 2x stud into a single 2x bottom plate over a wood floor system.
  5. The SDWC15600 is to be installed through the face of 2x stud into a double 2x top or bottom plate.
  6. Double-top plates shall be fastened together as required by applicable code.
  7. When a screw is loaded simultaneously in more than one direction, the allowable load must be evaluated using the unity equation: (Design Uplift ÷ Allowable Uplift) + (Design F1 ÷ Allowable F1) + (Design F2 ÷ Allowable F2) ≤ 1.0. The three terms in the unity equation represent the possible generated force directions. The number of terms that must be considered for simultaneous loading is the sole discretion of the designer and depends on the method of calculating wind forces and the utilization of the screws within the structural system.

Strong-Drive® SDWC TRUSS Screw (39)

Stud-to-Top Plate Connection
(This application requires SDWC15600)

Strong-Drive® SDWC TRUSS Screw for Narrow Face of Stud-to-Plate Connections

The Strong-Drive SDWC Truss screw provides an easy-to-install, high-capacity solution for stud-to-bottom plate or stud-to-top plate(s) connections. This table provides additional allowable load information for the SDWC screws when installed through the narrow face of the stud. The allowable loads are for SDWC screws installed per the details shown installed per the details shown.

SDWC — Allowable Loads for Narrow Face of Stud-to-Plate Connections

Strong-Drive® SDWC TRUSS Screw (40)

  1. Loads have been increased for wind and earthquake (CD=1.6). No further increase is allowed; reduce when other loads govern.
  2. The SDWC15600 is to be installed through the narrow face of 2x stud into a single 2x bottom plate over a wood floor system.
  3. The SDWC15450 is to be installed through the narrow face of 2x stud into a single 2x bottom plate over a concrete/masonry foundation.
  4. Double-top plates shall be fastened together as required by applicable Code.
  5. When a screw is loaded simultaneously in more than one direction, the allowable load must be evaluated using the unity equation: (Design Uplift ÷ Allowable Uplift) + (Design F1 ÷ Allowable F1) + (Design F2 ÷ Allowable F2) ≤ 1.0. The three terms in the unity equation represent the possible generated force directions. The number of terms that must be considered for simultaneous loading is the sole discretion of the designer and depends on the method of calculating wind forces and the utilization of the screws within the structural system.
  6. One SDWC screw per stud maximum when installed in the narrow face of the stud. Where the SDWC screws are installed on multiple adjacent studs, the minimum spacing between screws must be 1 1/2". The allowable uplift load for each screw shall be multiplied by 0.90, but may be limited by the capacity of the plate.
  7. For Uplift Continuous Load Path, connections in the same area (i.e., truss to plate connector and plate to stud connector) must be on the same side of the wall.

SDWC — Allowable Shear Loads for Sole-to-Rim Connections

Strong-Drive® SDWC TRUSS Screw (41)

  1. Allowable loads are based on testing per ICC-ES AC233 and are limited to parallel-to-grain loading.
  2. Allowable loads are shown at the wood load duration factor of CD = 1.00. Loads may be increased for load duration by the building code up to a CD = 1.60.
  3. Minimum spacing of the SDWC is 6" o.c., minimum end distance is 6", and minimum edge distance is 5/8".
  4. Wood structural panel up to 1 1/8" thick is permitted between the sole plate and rim board provided it is fastened to the rim board per code and the minimum penetration of the screw into the rim board is met.
  5. A double 2x sole plate and/or top plate is permitted provided it is independently fastened per the code and the minimum screw penetration per the table is met.
  6. Minimum rim board height shall be 9 1/4" when using fasteners for sole plate and top plate fastening.
  7. Sole-to-rim load can be achieved without a wall below.

See additional Load Tables, Technical Data and Installation Instructions for the Strong-Drive® SDWC Truss screw

Code Reports & Compliance

(Video) How to Use the Strong Drive® SDWC Truss Screw

Drawings

PDF DWG DXF RFA IFC SAT

FAQs

What screws to use for trusses? ›

An SDWC screw may be used in each ply of two- or three-ply rafters or trusses.

Can you put screws in trusses? ›

It is possible to screw into your truss, but it's risky. You would still be modifying the stress distribution on the truss, but significantly less so than cutting or drilling. However, only screw into your truss if it's absolutely necessary, and consult the engineer who designed your attic before you do.

When would you use a truss screw? ›

These screws can be used for applications like securing thin membranes, such as one-ply, through insulation. Wooden truss head screws are also commonly used to attach cabinets to steel studs; or to attach sliding shelf supports, since the low-profile head of the truss head screw does not interfere with guide operation.

What is a truss lock screw? ›

TrussLok is a steel screw which is used to secure truss to top plate connection to resist wind uplift. The screw is driven vertically through the wall plate into the truss when fixing between studs.

How do roof trusses attach to top plate? ›

FastenMaster TimberLOK - Attaching Rafter or Truss to Top plate - YouTube

Can screws be used for rafters? ›

Our inspectors have seen a disturbing trend of late: people using wood or deck screws when building structural elements. This means ordinary wood screws cannot be used to attach rafters to top plates, or joists to beams.

How much weight can I hang from my garage trusses? ›

The horizontal bottom chords of most garage trusses are designed to carry the weight of drywall and insulation. So if your ceiling is unfinished, you have some excess carrying capacity up there: 5 lbs. per sq. ft. is a safe estimate.

Can I drill into roof trusses? ›

A truss cannot be drilled without authorization of a licensed professional engineer or the truss manufacturer. ”Truss members shall not be cut, notched, drilled, spliced or otherwise altered in any way without the approval of a registered design professional,” according to the International Residential Code (IRC R802.

How do you install a truss screw? ›

SDWC Truss Screw — The Simple New Way for Truss, Stud ... - YouTube

What does a truss screw look like? ›

Truss head screws are threaded fasteners with a mushroom-shaped head. They have a wide and slightly rounded head that resembles a mushroom. With their mushroom-shaped head, truss head screws will protrude out of the workpieces in which they are installed.

What is a modified truss screw? ›

Phillips modified truss head screws feature an over-sized domed head with a flange, similar to an integral washer. Modified truss head screws have a 100 degree undercut which creates a larger area beneath the screw's head for a larger bearing surface.

How long should TimberLOK screws be? ›

Variety of lengths, from 4" to 10", to match every application. Free bit in every package. Available in 4 Screw Sizes x 5/16"

How do you install truss anchors? ›

How to Attach Trusses with the Quik Stik - YouTube

What is a trust screw? ›

Also known as a mushroom head screw, a truss head screw is a type of threaded fastener with a wide and rounded head. The photo above shows a collection of truss head screws. As you can see, they all have a wide and rounded head. Truss head screws are designed to protrude out the surface into which they are driven.

What do roof trusses sit on? ›

Roof decking or sheathing is the thin wooden boards that span the entire truss and support the rest of the roof.

How do trusses attach to walls? ›

Trusses or rafters may be attached to walls with a minimum of three of any of the nails shown in the adjoining table as long as the uplift does not exceed 200 pounds. If you are using gun nails, you must use a minimum of a 16d gun nail. allowed provided the nailing does not damage the metal plates.

What nails do you use for trusses? ›

Use specified standard length common nails. 16d common and 10d common nails are 3-1/2" and 3" long respectively. 1-1/2" slots allow for truss float. Do Not fully seat nails into truss when installing.

Should you screw or nail rafters? ›

A general rule of thumb is use screws when you need pull strength and nails when you need shear strength. For example use a screw to hold down a decking board, but a nail to hold the joist up. Screws hold thing tighter then nails, but screws are brittle when hit from the side giving nails the advantage.

Do screws hold better than nails? ›

Screws have more holding power than nails and have a high failure strength that makes them well suited for high-stress structural projects. They're also easier to remove.

Can I use screws instead of nails for framing? ›

Nails are often preferred for structural joining, including framing walls, because they are more flexible under pressure, whereas screws can snap. Nails are also called upon when securing plywood sheathing for exterior walls, installing hardwood floors, and attaching siding and roofing.

Why do trusses break? ›

When a truss collapses, it is usually because of the failure of either the top chord (in compression, unless a cantilever) or the bottom chord (in tension, unless a cantilever). If a truss buckles or overturns, it is usually because of the failure of an adjacent truss or its bracing.

Are roof trusses load-bearing? ›

Trusses provide weight distribution for numerous systems, including roofs and floors. Roof trusses, used with pitched roofs, relieve stress placed on a roof by the weight of its own material. They do this by distributing that weight down a series of lines designed to disperse load-bearing stress.

Can you reinforce trusses? ›

Jack up the centre of the trusses, then reinforce each bottom chord with a 2x4 that spans the entire width of the garage. Jack up the centre, reinforce (as above), and also replace any wood strapping with steel mending plates, hurricane ties, etc.)

How much load can a truss take? ›

According to the IRC, the minimum live load capacity of a roof truss for non-sleeping areas should be around 40 pounds per square foot. Again, if it's built for sleeping areas, it should be around 30 pounds per square foot.

Are roof trusses stronger than rafters? ›

They have superior span and strength – Both the span and strength of truss roofs are superior to rafters. While truss spans can reach up to 60 feet, rafter spans usually can only reach to about 30 feet. Also, the webbing of truss roofs provides excellent structural strength.

Can you hang things from trusses? ›

All weight hanging from the truss has to be added to the existing dead load; if the total weight exceeds the load limit of the truss, then the truss is compromised.

Can you drill through the bottom chord of a truss? ›

The trusses have been designed to account for possible deflection to a certain degree. By drilling holes here, the integrity of the design has been compromised and therefore invalidated. Put simply, we kindly ask that you do NOT cut, drill or notch your trusses unless otherwise agreed with Minera Roof Trusses.

Can you attach drywall to trusses? ›

When attaching drywall to trusses 24 inches OC, you can attach the drywall directly to the truss using thicker, 5/8-inch drywall or specially formulated drywall that resists sagging. Home improvement centers carry different brands; ask for "sag-resistant drywall."

Can I cut the bottom chord of a truss? ›

You can't cut the lower chord of the truss, these are not designed to be cut under any circumstances, you have to work around it.

What is a structural wood screw? ›

Structural fasteners are made from stronger steel and are heat-treated for maximum strength. So even though they look less “beefy,” they're actually one-to-one replacements for their fatter cousins. One brand has a modified drill bit embedded into the screw point, so the screw literally removes wood as it spins.

How do you install common trusses? ›

How to install Roof Trusses - YouTube

Can you use screws for hurricane ties? ›

Screws – the most common type of screw used for hurricane straps are wood screws. They are available in various lengths, but the most common size used is 2 1/2-inch. You'll also need some wood glue to secure the screws in place.

What does drive size mean for screws? ›

Drive style—or drive recess as it is called—refers to the kind of tool you use to install (or remove) the screw. Of the many that exist, the most common are: slotted, Phillips, combination (both slotted and Phillips), hex, hex socket, square, Torx® and spanner.

What are the 4 different types of screw heads? ›

Types of Screw Heads/Screw Drives
  • Step 1: Slotted. Slotted screws are the simplest type of screw, consisting of a single slot at the head of the screw. ...
  • Step 2: Phillips. The Phillips screw, named after Henry F. ...
  • Step 3: Square Aka "Robertson" ...
  • Step 4: Torx Aka "Star"

What are the sizes of screws? ›

American Screw Sizes
THREAD DIAMETER
SizeNearest FractionInch
#69/640.13
#85/320.16
#103/160.19
8 more rows
25 May 2022

What's a pan head screw? ›

Pan head screws are a common head type of non-countersunk screw head used to secure and fasten insulation. They have wide heads, a flat bearing surface, and a flat or slightly domed top surface with a recessed socket.

What are wafer head screws? ›

Wafer head screws are drill point fasteners for fixing drywall profiles one to the other providing a large holding surface or for accessory mountings on steel structures up to 2.5 mm thickness.

Are lath screws stainless? ›

Also called Lath Screws. Newport Fasteners Wire Lath Modified Truss Head Screws are a stainless steel 305 (18-8) fastener with an extra wide head, twinfast thread and Type 17 Cutting Point. The head consists of an integrally formed washer with a low rounded top that is approximately 75% of the washer diameter.

Can I drill into roof trusses? ›

A truss cannot be drilled without authorization of a licensed professional engineer or the truss manufacturer. ”Truss members shall not be cut, notched, drilled, spliced or otherwise altered in any way without the approval of a registered design professional,” according to the International Residential Code (IRC R802.

What is a modified truss screw? ›

Phillips modified truss head screws feature an over-sized domed head with a flange, similar to an integral washer. Modified truss head screws have a 100 degree undercut which creates a larger area beneath the screw's head for a larger bearing surface.

Can you nail into a truss? ›

Trusses or rafters may be attached to walls with a minimum of three of any of the nails shown in the adjoining table as long as the uplift does not exceed 200 pounds. If you are using gun nails, you must use a minimum of a 16d gun nail. allowed provided the nailing does not damage the metal plates.

What are washer head screws? ›

Hex washer head screws are a type of self-piercing screw equipped with a built-in washer at the screw head. This allows for the distribution of weight and load over a wider area.

How much weight can I hang from my garage trusses? ›

The horizontal bottom chords of most garage trusses are designed to carry the weight of drywall and insulation. So if your ceiling is unfinished, you have some excess carrying capacity up there: 5 lbs. per sq. ft. is a safe estimate.

How do you attach roof trusses? ›

How to install Roof Trusses - YouTube

What does a truss head screw look like? ›

Truss head screws are threaded fasteners with a mushroom-shaped head. They have a wide and slightly rounded head that resembles a mushroom. With their mushroom-shaped head, truss head screws will protrude out of the workpieces in which they are installed.

What are wafer head screws? ›

Wafer head screws are drill point fasteners for fixing drywall profiles one to the other providing a large holding surface or for accessory mountings on steel structures up to 2.5 mm thickness.

Are lath screws stainless? ›

Also called Lath Screws. Newport Fasteners Wire Lath Modified Truss Head Screws are a stainless steel 305 (18-8) fastener with an extra wide head, twinfast thread and Type 17 Cutting Point. The head consists of an integrally formed washer with a low rounded top that is approximately 75% of the washer diameter.

What kind of nails do you use for trusses? ›

Use specified standard length common nails. 16d common and 10d common nails are 3-1/2" and 3" long respectively. 1-1/2" slots allow for truss float. Do Not fully seat nails into truss when installing.

Can you nail trusses to interior walls? ›

Contributing editors Rick Arnold and Mike Guertin reply: Roof-truss suppliers don't recommend that you fasten the top plates of the interior walls to the bottom chords of the trusses because of phenomenon called “truss uplift.” Trusses are fabricated from regular 2x dimensional lumber, so they are prone to the same ...

Can you attach drywall to trusses? ›

When attaching drywall to trusses 24 inches OC, you can attach the drywall directly to the truss using thicker, 5/8-inch drywall or specially formulated drywall that resists sagging. Home improvement centers carry different brands; ask for "sag-resistant drywall."

What are the 4 different types of screw heads? ›

Types of Screw Heads/Screw Drives
  • Step 1: Slotted. Slotted screws are the simplest type of screw, consisting of a single slot at the head of the screw. ...
  • Step 2: Phillips. The Phillips screw, named after Henry F. ...
  • Step 3: Square Aka "Robertson" ...
  • Step 4: Torx Aka "Star"

What does drive size mean for screws? ›

Drive style—or drive recess as it is called—refers to the kind of tool you use to install (or remove) the screw. Of the many that exist, the most common are: slotted, Phillips, combination (both slotted and Phillips), hex, hex socket, square, Torx® and spanner.

What is the most common screw head? ›

#1) Phillips-Head

Arguably, the most common type of screw drive is Phillips head. Developed by American engineer John P. Thompson, it offers a high level of torque to achieve quick and easy installation. Phillips-head screws feature a cross-shaped pattern on the head in which the screwdriver is inserted.

Videos

1. Faster Safer Rafter/Truss Top Plate Attachment
(AwesomeFramers)
2. Stronger Than an H1 and H2.5?
(AwesomeFramers)
3. Using the Quik Stik™ Installation Tool for Rafter and Truss Connections
(Simpson Strong-Tie)
4. FastenMaster TimberLOK Rafter/Truss to Top Plate Installation Guide
(FastenMaster)
5. Simpson Strong Tie Strong Drive
(BCM for Tradies)
6. Quik Stik™ Installation Tool for Rafter and Truss Connections
(Simpson Strong-Tie Australia)

Top Articles

Latest Posts

Article information

Author: Kerri Lueilwitz

Last Updated: 12/13/2022

Views: 6094

Rating: 4.7 / 5 (47 voted)

Reviews: 86% of readers found this page helpful

Author information

Name: Kerri Lueilwitz

Birthday: 1992-10-31

Address: Suite 878 3699 Chantelle Roads, Colebury, NC 68599

Phone: +6111989609516

Job: Chief Farming Manager

Hobby: Mycology, Stone skipping, Dowsing, Whittling, Taxidermy, Sand art, Roller skating

Introduction: My name is Kerri Lueilwitz, I am a courageous, gentle, quaint, thankful, outstanding, brave, vast person who loves writing and wants to share my knowledge and understanding with you.