Simpson Strong-Tie SDWH19400SS-R100 Strong-Drive® SDWH™ TIMBER-HEX SS Screw — 0.185 in. x 4 in. 5/16 Hex, Type 316 (100-Qty)

Stainless-steel structural fasteners designed for lag-screw replacement. These hex-head fasteners require no predrilling, making them easier and faster to install than typical lag screws. They meet 2018 and 2021 IRC® and IBC® code requirements for several common wood-framing applications.

This Simpson product is designed for construction, connector, fastening, anchoring, and structural applications where dependable performance, durability, and jobsite-ready installation matter.

Features

• No predrilling necessary in most applications
• Can be used in ledger applications
• Unique "box" thread design with raised-ridge technology significantly reduces driving torque and installation time
• Hex-washer head provides large bearing area
• 5/16-in. hex driver bit included (replacement bit — BITHEXR516-R1)
• Length: 4 in.
• Type 316 stainless steel for maximum corrosion protection
• Quantity: 100

Application

• Dock and Boardwalk
• Flood-Resistant Construction
• Fastening Wood-to-Wood
• Coastal / Salt Air
• Marine

Specifications

• ERP Part Number: SDWH19400SS-R100
• UPC: 707392305941
• GTIN: 707392305941
• Feature 01: No predrilling necessary in most applications
• Feature 02: Can be used in ledger applications
• Feature 03: Unique "box" thread design with raised-ridge technology significantly reduces driving torque and installation time
• Feature 04: Hex-washer head provides large bearing area
• Feature 05: 5/16-in. hex driver bit included (replacement bit — BITHEXR516-R1)
• Feature 06: Length: 4 in.
• Feature 07: Type 316 stainless steel for maximum corrosion protection
• Feature 08: Quantity: 100
• Applications List: Dock and Boardwalk
• Applications List.1: Flood-Resistant Construction
• Applications List.2: Fastening Wood-to-Wood
• Applications List.3: Coastal / Salt Air
• Applications List.4: Marine
• Assembled Depth - Imperial: 0.455
• Assembled Depth UOM - Imperial: in.
• Assembled Width - Imperial: 0.455
• Assembled Width UOM - Imperial: in.
• Base Product ID: SDWH-SS_Screw
• Base Product Name: Strong-Drive® SDWH™ TIMBER-HEX SS Screw
• Brand Name: Simpson Strong-Tie®
• Category Tree (Computed): Fasteners > Exterior Wood Screws > Hand-Drive Screw
• Country of Origin: TW
• Customer Unit: Yes
• Display Unit/Measure: EA
• Drive Type: 5/16 in. Hex
• Finish: Type 316 Stainless Steel
• GUID: 134031435591479020846866898847553745549
• Head Diameter (in.): 0.455
• Head Type: Hex Washer Head
• Length (in.): 4
• Logo Image: https://images.salsify.com/image/upload/s--Lkh4Jm6c--/vkrqlmpfxgflsa4yytuq.png
• Material: Type 316 Stainless Steel
• Measurement Unit Text: each
• MFG Name: Simpson Strong-Tie®
• Number Category Description: UPC
• Packaging Quantity: 100
• Point Type: Sharp Point
• Product Class: Hand-Drive Screw
• Product Includes: Includes (1) driver bit
• Prop 65 - Cancer: Wood Dust
• Prop 65 - Long Text: WARNING! This product can expose you to chemicals including wood dust which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov
• Prop 65 - Short Text: WARNING! Cancer - www.P65Warnings.ca.gov
• Prop 65 Warning: Yes
• Quantity: 1
• Shank Diameter (in.): 0.185
• Shipping Weight: 3.6
• Short Product Name: .188 X 4IN 316SS 5/16 HEX 100CT
• Strongtie.com URL: https://www.strongtie.com/strongdrive_exteriorwoodscrews/sdwh-ss_screw/p/strong-drive-sdwh-timber-hex-ss-screw
• Subcategory: Fasteners
• Subcategory 2: Exterior Wood Screws
• Thread Length (in.): 2 3/8
• Thread Type: Box Threads
• Warranty PDF: https://images.salsify.com/image/upload/s--K_9ww28_--/bgqxyqo1uhaqsqcvudu7.pdf
• Brand Video: https://images.salsify.com/video/upload/s--N-SMFYx9--/wpz3sdgci9c512ppr9df.mp4
• CAR Reference: 10707392305948
• PAL Reference: 50707392305946