Import Flange Bolts Din6921 — Buy in Bulk from Supplier in China

Flange bolts DIN6921 are precision-engineered fasteners with an integrated flange head designed to distribute load evenly and reduce the need for washers in high-stress assemblies. These bolts are manufactured to DIN6921 standards with metric thread sizes ranging from M6 to M24, and lengths from 12mm to 160mm. The material is typically carbon steel grade 8.8 or 10.9, as specified in the source data, with surface treatments including zinc plating or hot-dip galvanizing for corrosion resistance.

The bolts are cold-forged to maintain grain integrity and achieve consistent mechanical properties. Typical industry tolerances for thread pitch and head height follow DIN standards, with head thickness varying by diameter. Surface finish is generally smooth, with no visible forging defects. In industrial contexts, these bolts are preferred over standard hex bolts in applications where vibration or thermal cycling could cause loosening, such as in machinery frames or pipeline supports.

End users include manufacturers of heavy machinery, automotive assembly lines, and structural steel fabricators. Buyers commonly source these bolts for replacement parts or new equipment builds where DIN compliance is required. Packaging is typically in bulk boxes of 100 to 500 pieces, depending on size. Trade terms are negotiable, with FOB Ningbo or CIF ports available. Minimum order quantities are not stated in the source and must be confirmed directly with the supplier.

Ningbo Beilun Milfast Metalworks Co., Ltd is a metal fabrication supplier based in Beilun District, Ningbo, Zhejiang, China. The company operates as an imported supplier with harbor trust tier, indicating verified export experience and physical presence in a major port region. The listing does not disclose factory size, employee count, or years in operation. Response rate and average response time are not available, suggesting limited buyer communication history on the platform.

The supplier specializes in precision metal fasteners and industrial components, with production focused on cold-forged and machined parts. The company does not claim ISO certification or client names in the source data. Its capabilities are inferred from the product range and location, suggesting alignment with regional manufacturing clusters for export-grade hardware. No claims about certifications, revenue, or international clientele are made or implied.