DIN6921 Hexagon Flange Bolts Without Serrated

Jiaxing Aoke Trading is a experienced manufacturer and exporter of flange bolts in China. Stainless steel DIN6921 hexagon head flange bolts are suitable for applications requiring high-strength sealing, such as piping systems and pressure vessels. Their dimensions strictly adhere to the German standard DIN6921. Their hexagonal head features a flanged surface (no serrations). This design maximizes contact area with the connected components and distributes pressure. Thread accuracy reaches 6g, enhancing overall connection strength. Compared to conventional hexagonal bolts, DIN6921 flange bolts eliminate the need for additional washers, achieving sealing and anti-loosening directly through the flange, simplifying assembly. DIN6921 hexagon head flange bolts are made of 304 stainless steel (18% chromium, 8% nickel) and 316L stainless steel (2%-3% molybdenum). The appropriate material can be selected based on the application.

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Product Description

You are welcomed to come to our factory to buy the competitive price, and high-quality DIN 6921 hexagonal flange bolt without serrate. The core design of the DIN 6921 hexagonal flange bolt is a circular washer structure formed in one piece under the bolt head. This flange replaces the traditional combination of bolts and flat washers. Conventional DIN 6921 hex head flange bolts has a serrated flange. In order to meet the needs of different customers, AOKE can produce flange bolts non serrated for use in the food and pharmaceutical industries to avoid dirt and grime. AOKE can supply hexagonal flange bolts in a variety of materials, including austenitic stainless steel A2 (SS304) or A4 (SS316). This gives the bolts excellent corrosion resistance.

Product Parameter (Specification)

Standard	DIN6921/ISO 15072/IFI 538	Material	SS304 (1.4301);SS316(1.4401)
Surface Treatment	Plain, Passivation, black, thread locking, nylon coating	Shank	Full thread/ Half thread
Grade	A2-70 A2-80 A4-70 A4-80	Size	M4-M30
Unite	Piece	Head type	Flange head
Packing	Bulk cartons with pallet, small boxes in cartons with pallet	Lead time	Busy season:20-30days,Slack season:10-20days

Product Application

DIN6921 flange bolts are widely used in heavy Industry, mining, water treatment, healthcare, construction, general industry, Oil & Gas, heavy machinery, aotomobile and motorcycle.