304 & 305 Stainless Steel Square Drive Flat Head Deck Screw
SS305, 304 and 316
StainGrip® 304 & 305 Stainless Steel Square Drive Flat Head Deck Screws are high-performance exterior fasteners engineered for superior holding power and flush finishing in traditional timber decking, pressure-treated lumber, cedar, redwood, and wood-composite applications. Manufactured from premium SS304 and SS305 grade stainless steel, these deck screws provide exceptional resistance against rust, outdoor weathering, and harsh chemicals present in treated wood, making them the classic choice for durable, long-lasting deck construction.
Key Features & Technical Benefits
Premium SS304 & SS305 Stainless Steel (Maximum Corrosion Protection): High nickel and chromium formulation delivers long-lasting rust and chemical resistance, specifically built to withstand wet outdoor environments, coastal moisture, and aggressive chemicals found in ACQ pressure-treated timber.
Countersunk Flat Head with Underhead Nibs: Features a classic flat head engineered to seat perfectly flush with or slightly countersunk into the wood surface. Built-in underhead nibs carve out a neat recess to prevent surface tearing, splintering, or board splitting.
Deep Square Drive System (Robertson Drive / Cam-Out Prevention): Precision-machined square recess (#2 Square Drive) provides a tight driver bit engagement, enabling maximum torque transfer without bit slippage, cam-out, or head stripping during heavy installation.
Type 17 Auger Point (Fast Drilling & Split Prevention): The razor-sharp Type 17 notch slices through tough wood fibers quickly, ensuring immediate bite, reduced driving torque, and no pre-drilling required in standard softwoods and treated lumber.
Aggressive Coarse Threads: Deep, coarse thread geometry bites securely into wood joists, pulling decking boards tightly down to eliminate board movement, squeaking, and cupping over time.
Technical Specifications
Feature | Specification |
|---|---|
Material Grade | SS304 / SS305 Stainless Steel |
Head Style | Countersunk Flat Head (with Underhead Nibs) |
Drive System | Square Drive (#2 Square / SQ2) |
Point Type | Type 17 Auger Point |
Application | Pressure-Treated Wood, Cedar, Redwood, Timber & Composite Decking |
Stainless Steel Grades:
o 304 / 18-8 Stainless Steel: Excellent corrosion resistance, ideal for general applications.
o 305 Stainless Steel: High nickel content, non-magnetic, ideal for cold forming and deep drawing.
o 316 Stainless Steel: Marine-grade, superior resistance to salt water and chemicals.
Applicable Standards:
o Dimensional: ASME B18.6.3 / ASME B18.2.1 / ANSI
o Material / Physical: ASTM F593 (Group 1: 304/305, Group 2: 316) / ASTM A240
Certifications: MTR (Material Test Report) / Mill Certs available upon request.
Fast Dispatch for Stocked Items: Ready-to-ship inventory available for quick order dispatch.
Factory-Direct Bulk Production: Competitive direct-from-factory lead times for wholesale and custom orders.
Flexible International Shipping: Comprehensive shipping options including FOB, CIF, and DDP (Door-to-Door with duties paid).
Tracking & Logistics: Full shipment tracking provided from factory loading to final delivery.
We offer full OEM/ODM manufacturing to meet your specific application needs.
Head Marking & Design: Custom head logo, drive type, and head shape.
Dimensions & Tolerances: Custom sizes according to ASME standards or customer drawings.
Head Painting & Coating: Head color matching, passivation, and specialty finishes.
Private Label Packaging: Custom inner/outer box design, polybags, and barcode labeling.
Samples: Custom samples and initial inspection reports available before full production.
Flexible custom packaging solutions available for both wholesale and retail markets:
Multiple Packaging Options: From small polybags and small inner boxes to industrial bulk packing.
Custom Printing & Logo: Custom box design, printed logos, and brand artwork.
Labeling & Barcodes: Private labels, UPC/EAN barcodes, part numbers, and shipping marks.
