
Hex Washer Head Self Drilling Screw with Black EPDM Bond Washer /Roofing Screw Stainless Steel Material. Customizable Products: Accept customized orders with specific drawings, materials, and surface treatments. Multiple Material Options: Available in SUS304, SUS316, and SUS410 stainless steel for various applications. Wide Size Range: Sizes ST4.2-ST6.3 with lengths from 19mm to 150mm to meet diverse needs. Professional Manufacturing: Factory with over 20 years of experience in stainless steel and brass fasteners. Flexible Order Acceptance: Accept small orders to provide convenience for clients with varying requirements. Comprehensive Certifications: Products certified with ISO, GS, RoHS, CE, and SGS standards. Reliable After-Sales Service: 24/7 support with responsible handling of any transport damage or quality issues. Secure Packaging: Standard carton and pallet packing, or customized packaging per client request.