
Hex Indent Washer Head Self Drilling Screw /Roofing Screw/Stainless Steel Screw. Premium Material Options: Available in Stainless Steel 304, 316, and 410 with heat treatment for durability. Multiple Certifications: Certified with ISO, GS, RoHS, CE, and SGS standards for quality assurance. Versatile Size Range: Sizes ST4.2 to ST6.3 with lengths from 19mm to 150mm to fit various needs. Custom Logo Printing: We can print your logo upon request with a valid Brand Authorization Letter. Flexible Customization: Customize surface treatment, material, quantity, and special requirements via drawings. Small Orders Accepted: We accept small orders to provide maximum convenience for our clients. Fast Delivery: 5-10 days for stock items; 15-20 days for non-stock items depending on quantity. Comprehensive After-Sales: Full support for quality issues and transport damage with prompt resolution.