410/304/316 Stainless Steel #8*1 hex head self drilling screw
Stainless steel 410, 304 and 316
StainGrip® 410 / 304 / 316 Stainless Steel #8 x 1" Hex Washer Head Self-Drilling Screws are high-performance structural fasteners designed for fast drilling, secure clamping, and maximum torque transfer when joining light-gauge sheet metal, metal-to-metal framing, brackets, HVAC ducting, and industrial cladding assemblies. Manufactured from premium grade stainless steels—including heat-treated 410 for high-hardness drilling power and 304/316 for ultimate corrosion protection—these screws feature an integrated hex washer head that eliminates the need for separate washers while providing superior holding force.
Key Features & Technical Benefits
Versatile Stainless Steel Options (410 / 304 / 316 Grades): Available in heat-treated 410 stainless steel for high hardness and piercing power into steel framing, or 304 and 316 (marine grade) stainless steel for maximum corrosion resistance in outdoor, chemical, and saltwater environments.
Hex Washer Head (Indented Hex Flange): Combines an external hex drive with a broad integrated washer face to distribute clamping pressure evenly over a wide surface area, preventing sheet metal deformation and providing exceptional pull-through resistance.
Precision Self-Drilling Tip (Tek Point): Engineered with a sharp integrated drill bit tip that drills, taps, and fastens into light-to-medium gauge steel and aluminum in a single step, eliminating the need for pre-drilled pilot holes.
High Torque Engagement (External Hex Drive): Hexagon head design allows full wrench or socket engagement, delivering maximum driving torque without driver bit slippage, cam-out, or fastener rounding during heavy power tool installation.
Full-Length Tapping Threads: Sharp, continuous threads tap directly into the drilled hole, ensuring maximum thread engagement and resistance against dynamic vibration loosening.
Technical Specifications
Feature | Specification |
Size / Dimensions | #8 x 1" (4.2mm x 25mm) |
Material Grade | 410 Heat-Treated SS / SS304 / SS316 Marine Grade |
Head Style | Hex Washer Head (Indented Hex Flange) |
Drive System | External Hex Socket Drive |
Point Type | Self-Drilling Point (Tek Point) |
Application | Metal-to-Metal Framing, Sheet Metal, HVAC Ductwork, Aluminum & Cladding |
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.
