Factory-direct flange bolts (serrated hex flange head bolts) to DIN 6921, with a built-in serrated washer face that resists loosening under vibration. Grades 8.8 and 10.9, carbon or alloy steel, available zinc plated, hot-dip galvanized and Dacromet. Ideal for automotive, steel structure and machinery assemblies. ISO 9001:2015 certified factory · OEM/ODM supported · Bulk MOQ 500 pcs.
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Hex flange bolts to DIN 6921 with integrated washer face that spreads clamp load and resents loosening under vibration. Popular in automotive, trailer and pump manufacturing; available with serrated flanges for anti-vibration duty, class 8.8 to 10.9, M5 to M16.
Need a quotation? Send us your specification - MOQ from 1,000 pcs, lead time 7-15 days, ISO 9001:2015 certified with EN 10204 3.1 material certificates.
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