Bolts
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Industrial Bolts: Hex, Flange, Carriage & Structural
Rongrun manufactures and exports metric and imperial bolts from M5 to M48 in carbon steel (property class 4.8 to 12.9), alloy steel and stainless steel A2-70 / A4-80. Core standards cover DIN 931, DIN 933, DIN 603, DIN 6921 and ASTM A325 / A490, with plain, zinc-plated, hot-dip galvanized, black oxide and Dacromet finishes to match your service environment.
Related Technical Guides
- DIN 931 vs DIN 933 Hex Bolt
- Bolt Head Types Explained
- Bolt Strength Grades 8.8 / 10.9 / 12.9
- Hot-Dip vs Electro Galvanizing vs Dacromet
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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Carriage Bolts · Double End Studs · Eye Bolts · Flange Bolts · Hex Head Bolts · SEMS Bolts · Socket Head Cap Screws · Square Head Bolts · Structural Bolts · T-Head Bolts · U-Bolts