Shop by Category

Flange Bolts Zinc

UNC Flange Bolts

SAE Grade 5
Zinc Cr3

Hex flange serrated bolts have a hexagon head with a built-in washer and under the head teeth like serrations which bite into the surface to help prevent loosening. The built-in washer acts to distribute the clamping load over a greater area and the wide flange head is designed to provide the same holding power as a washer.