Simpson Strong-Tie S09400FBB Trim-Head Screw, Square Drive — #9 x 4 in. #2 SQ, Type 305 (1000-Qty)

Ideal for decking applications, the Simpson Strong-Tie® trim-head screw features a square drive for secure, slip-free engagement during installation. The low-profile, trim-style head sits flush with the surface, delivering a clean finish. A Type-17 point allows for quick starts, while coarse threads on the lower two-thirds of the shank provide powerful pull-through—drawing deck boards tightly to the joists for a secure hold. Simpson Strong-Tie offers this trim-head screw in stainless steel 6-lobe drive (and painted heads) for hand-drive applications, as well as in collated square-drive versions (with and without painted heads) for the Simpson Strong-Tie® Quik Drive® auto-feed screw driving systems.

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

Features

• Trim-style head for flush seating and cleaner appearance on decking surfaces
• Square-drive design for easy installation and secure driving
• Type-17 point for fast starts
• Coarse threads on approximately two-thirds of the shank for pulling the decking and other material tightly to the framing
• Driver bit included in each package
• Predrilling recommended near board ends to prevent splitting
• Screw length: 4 in.
• Type 305 stainless steel provides high-level corrosion resistance
• Quantity: 1,000 per package

Application

• Decks — Deck Boards Wood
• Dock and Boardwalk

Specifications

• ERP Part Number: S09400FBB
• UPC: 744039876549
• GTIN: 744039876549
• Feature 01: Trim-style head for flush seating and cleaner appearance on decking surfaces
• Feature 02: Square-drive design for easy installation and secure driving
• Feature 03: Type-17 point for fast starts
• Feature 04: Coarse threads on approximately two-thirds of the shank for pulling the decking and other material tightly to the framing
• Feature 05: Driver bit included in each package
• Feature 06: Predrilling recommended near board ends to prevent splitting
• Feature 07: Screw length: 4 in.
• Feature 08: Type 305 stainless steel provides high-level corrosion resistance
• Feature 09: Quantity: 1,000 per package
• Applications List: Decks — Deck Boards Wood
• Applications List.1: Dock and Boardwalk
• Appx Count Per Lb: 61
• Assembled Depth - Imperial: 0.250
• Assembled Depth UOM - Imperial: in.
• Assembled Height - Imperial: 4.00
• Assembled Height UOM - Imperial: in.
• Assembled Width - Imperial: 0.250
• Assembled Width UOM - Imperial: in.
• Base Product ID: THDSQ_Screw
• Base Product Name: Trim-Head Screw — Square Drive
• 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: #2 Square
• Finish: Type 305 Stainless Steel
• GUID: 297670333545353145872644892893953098192
• Head Diameter (in.): 0.250
• Head Type: Trim Head
• Length (in.): 4
• Logo Image: https://images.salsify.com/image/upload/s--Lkh4Jm6c--/vkrqlmpfxgflsa4yytuq.png
• Material: Type 305 Stainless Steel
• Measurement Unit Text: each
• MFG Name: Simpson Strong-Tie®
• Number Category Description: UPC
• Package Depth - Imperial: 10.00
• Package Depth UOM - Imperial: in.
• Package Height - Imperial: 7.70
• Package Height UOM - Imperial: in.
• Package Width - Imperial: 10.00
• Package Width UOM - Imperial: in.
• Packaging Quantity: 1000
• Point Type: Type-17 Point
• Product Class: Hand-Drive Screw
• Product Includes: Driver bit included (replacement bit part number: BIT2S-2-R2)
• 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
• Screw Size: #9
• Shipping Weight: 17
• Short Product Name: #9 4IN 305SS TRIM #2 17PT 1000CT
• Strongtie.com URL: https://www.strongtie.com/exteriorwoodscrews_screwsandnails/thdsq_screw/p/trim-head-screw--square-drive
• Subcategory: Fasteners
• Subcategory 2: Exterior Wood Screws
• Thread Type: Coarse 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
• PAL Reference: 50744039876544