Hex flange bolts are used on vehicle frames, especially truck frames, and anywhere a hex washer head bolt is needed. The large bearing surface distributes clamping force over a large area, allowing them to be used with irregular and oversized holes.

Hex flange bolts are often used with flange style lock nuts to create a bolt/nut system that resists loosening and spans a wide area.

They are also known as:  hex frame flange bolts, hex washer frame bolts, hex flange screws.  

Serrated hex flange bolts have teeth under their head that grip the mating surface to resist loosening.

Size: M5/M6/M8/M10/M12/M14/M16/M20

Length: as per size

Thread type: metric right-hand thread

Thread length: partial or full based on size and length

Material: steel

Grade: 4.8/6.8/8.8/10.9/12.9

Finish: plain/black oil/zinc plated/hot dip galvanized (HDG),

        other surface treatment are available upon request

Technical info: DIN 6921