The Strong-Drive SDWS Timber screw is designed to provide an easy-to-install, high-strength alternative to through-bolting and traditional lag screws. This screw is ideal for the contractor and do-it-yourselfer alike. It is code listed in IAPMO UES ER-192 and meets 2018 and 2021 IRC and IBC code requirements for most common wood framing applications.
Features:
- Bold thread design provides superior holding power
- SawTooth point ensures fast starts, reduces installation torque and eliminates the need for predrilling in most applications
- Underhead nibs allow for head to drive flush to surface with reduced splintering
- Large washer head provides a large bearing area
- Size identification on all SDWS screw heads
- 6-lobe T40 drive provides positive engagement that makes the screw easy to drive and improves bit life (replacement driver bit — BIT40T-134-R2)
- Double-barrier coating provides corrosion resistance equivalent to hot-dip galvanization, making it suitable for certain exterior and preservative-treated wood applications, as described in the evaluation report
- Applications: Structural wood-to-wood/engineered including ledgers; mass timber connections including CLT wall-to-wall, floor-to-floor, surface splines and lap joints
- Product Includes: Retail and mini-bulk packs include one 6-lobe, T40 driver bit; bulk packs include two driver bits (BIT40T-134-R2)
- Patent Information: US Patents 9,523,383; 11,181,138
Specifications:
- Coating/Material: Double-Barrier Coating
- Head Diameter (in.): 0.760
- Shank Diameter (in.): 0.220
- Drive Type: T40 6-Lobe
- Head Type: Washer Head
- Point Type: SawTooth Point
- Color: Black
- Packaging Qty.: 250
3in T-40 Strong-Drive Timber Screw:
- Length (in.): 3
- Thread Length (in.): 1-1/2
4in T-40 Strong-Drive Timber Screw:
- Length (in.): 4
- Thread Length (in.): 2-3/8
5in T-40 Strong-Drive Timber Screw:
- Length (in.): 5
- Thread Length (in.): 3
6in T-40 Strong-Drive Timber Screw:
- Length (in.): 6
- Thread Length (in.): 3
8in T-40 Strong-Drive Timber Screw:
- Length (in.): 8
- Thread Length (in.): 3