Premium Black Oxide Hex Head Bolts for Heavy-Duty Use

Premium Black Oxide Hex Head Bolts for Heavy-Duty Use. Wide Material Selection: Available in SS201, SS303, SS304, SS316, SS316L, SS904L, F593, and various carbon steel grades. Diverse Finishing Options: Offers Zinc (Yellow, White, Blue, Black), HDG, Black Oxide, Geomet, Dacroment, Anodization, and Nickel plating. Comprehensive Size Range: Production capabilities cover M2 to M100 using cold forging, hot forging, machining, and CNC processes. Multiple Standard Compliance: Meets DIN, ASTM/ANSI, JIS, EN, ISO, AS, GB, and BSW international standards. Custom Logo and Design: Accepts custom logos on products and boxes based on customer samples and drawings. Free Sample Availability: Provides free samples for standard fasteners with express charges covered for existing customers. Flexible Lead Time: Busy season 15-30 days, slack season 10-15 days, with expedited options for large orders. Professional Manufacturing: Over a decade of expertise with rigorous durability tests and technical designs for reliability.