DIN931 half-thread hex bolts correspond to ISO4014 and GB/T5782. Threads are provided only at the end of a solid shank; the unthreaded portion offers a shear-bearing surface and helps maintain alignment under load, which is useful for heavy connections of thick steel plates.

Available in sizes M6 to M64 with custom lengths. Material options include carbon steel grades 4.8–12.9 and stainless steel A2-70 / A4-80. Finishes offered: electro-galvanized, hot-dip galvanized and black oxide. Typical uses include steel construction, engineering machinery, wind power assemblies, pipeline brackets, bridge work and container fittings. Please confirm required size, length, grade and finish when enquiring.