Detail & Specs
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Metric Hex Flange Bolts A2 Black Stainless Steel DIN 6921
The smooth, non-serrated flange surface ensures superior force distribution over a greater area, eliminating the need for a separate washer. To be used with locking or non-locking nuts or in a tapped hole, commonly used on vehicle frames and various automotive applications.
Flange bolts can be used with many different styles of locking and non-locking nuts to clamp tightly to whatever the bolt is being used to secure. A wrench is used to install and tighten hex flanged bolts.
Finish: Black Oxide
- Abrasion resistant, does not peel, chip or rub off
- Reduces friction, prevents galling
- Does not change the strength of the stainless steel
- Practically no dimensional change to base fastener
- The spray applied during the coating process wears off over time, revealing an attractive matte black finish
The black oxide coating per MIL-DTL-13924, Class 4 on 300 series corrosion resistant steel meets 96 hours of resistance in a 5% salt spray (fog) test in accordance with ASTM B117. We recommend using stainless steel installation tools to prevent extraneous rust.
For any application involving marine (salt water), use A4 / 316 Stainless Steel material, available as bulk special order.
Also known as
Anti-corrosive external hex drive flange bolt, one-piece flange bolt for mechanical applications, non-serrated flange screw, external hex bolt with integral washer.
