304/316 Stainless Steel Pan head square drive wood screw
Stainless steel 304 and 316
StainGrip® 304 & 316 Stainless Steel Pan Head Square Drive Wood Screws are precision timber fasteners engineered for maximum joint clamping, stick-fit driver engagement, and exceptional holding power in pocket-hole joinery, cabinetry, outdoor furniture, and general woodworking. Manufactured from high-grade SS304 and marine-grade SS316 stainless steel, these screws offer superior corrosion protection against rust, weathering, and harsh chemical wood treatments while delivering slip-free driving performance.
Key Features & Technical Benefits
Premium SS304 & SS316 Stainless Steel (Ultimate Corrosion Resistance): High nickel and chromium alloy formulation (with added molybdenum in SS316) provides long-lasting resistance against rust, coastal moisture, outdoor weathering, and ACQ pressure-treated lumber.
Square Drive Recess (Positive Stick-Fit & No Cam-Out): Deep Robertson square drive design locks the driver bit firmly into place, enabling easy one-handed driving, eliminating bit slippage, and completely preventing driver cam-out under high torque.
Rounded Pan Head (High Clamping Surface & Pocket Hole Fit): Features a broad pan head with a flat underside bearing surface that distributes clamping force evenly across wood fibers or pocket-hole recesses without crushing the material.
Partial Thread Shank (Anti-Jacking Clamping Power): The unthreaded upper shank allows the top wooden board to slide freely and pull tightly against the base joist, eliminating joint gaps and board jacking for an airtight connection.
Sharp Gimlet Point & Deep Coarse Wood Threads: Razor-sharp tip provides immediate bite into hardwoods, softwoods, and plywood, while deep thread pitch delivers maximum pull-out strength.
Technical Specifications
Feature | Specification |
Material Grade | SS304 / SS316 Marine Grade Stainless Steel |
Head Style | Pan Head |
Drive System | Square Drive (Robertson #1 / #2) |
Shank Type | Partial Thread / Half Thread |
Point Type | Sharp Gimlet Point |
Application | Pocket-Hole Joinery, Cabinetry, Outdoor Furniture & Timber Assemblies |
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.
