Carbon Steel Hex Bolts

Carbon Steel Hex Bolts are the most versatile industrial fasteners, featuring a hexagonal head designed to be driven by a wrench or socket. Zeron Fastners manufactures these bolts in multiple property classes to suit different load requirements: Grade 4.6 for light-duty assemblies, Grade 8.8 for standard structural work, and Grade 10.9 or 12.9 for high-tensile applications. These bolts are essential for automotive, construction, and heavy machinery industries. Depending on the environment, we provide various protective coatings, including Hot-Dip Galvanizing (HDG) for superior corrosion resistance in outdoor settings and Zinc plating for a clean, rust-resistant finish in indoor environments.

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Carbon Steel Hex Bolts

Carbon Steel Hex Bolt Technical Specifications

Standard DIN 933 (Full Thread), DIN 931 (Partial Thread), IS 1364
Size Range M3 to M100 | 1/8" to 4" Diameter
Property Classes 4.6, 5.6, 8.8, 10.9, 12.9
Surface Finish Zinc Plated, Hot-Dip Galvanized, Black Oxide, Phosphate
Head Type Hexagonal Head

Mechanical Properties (Metric Grades)

Grade / Class Tensile Strength (min) Yield Strength (min) Hardness (HRC)
Class 4.6 400 MPa 240 MPa B67 - B95
Class 8.8 800 MPa 640 MPa C22 - C32
Class 10.9 1040 MPa 940 MPa C32 - C39

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