DIN931 hex head bolt is a partially threaded metric fastener, manufactured in accordance with German DIN standard. It is widely used for heavy-duty connection of machinery, mining equipment, steel structures and construction projects. Available in carbon steel grades 4.8, 8.8, 10.9, 12.9 and stainless steel A2/A4. Multiple surface treatments including zinc plating, hot-dip galvanizing and black oxide are optional. Accurate thread and stable mechanical property ensure high load capacity and long service life. We support OEM customization, provide test certificates and free samples for quality verification.

Advantages:

1. Partial thread design, smooth shank for better shear resistance, suitable for thick workpiece connection
2. High strength grade, stable mechanical performance, reliable heavy load fastening
3. Precise rolling thread, smooth assembly, not easy to slip thread
4. Multiple surface treatments optional, good anti-rust performance
5. Strict DIN standard dimension, interchangeable with European standard fasteners
6. Complete size range, support customized production
7. Factory direct supply, stable delivery, inspection report available

Why choose us? We are a professional fastener manufacturer with rich experience in DIN standard bolts. We strictly control raw materials and production processes to guarantee stable mechanical performance and accurate dimensions. We offer a full range of grades, sizes and surface treatments, and support OEM customization according to your drawings or requirements. Samples and quality inspection reports can be provided for your verification. With stable production capacity and reasonable lead time, we can arrange shipment flexibly. We provide one-stop service from inquiry, quotation to after-sales support, and always try our best to meet your fastening demands.