Flange bolts incorporate an integrated washer beneath the bolt head that aids in distributing the clamping force across a wider area. This “single-piece” configuration removes the necessity for an independent washer under the bolt head and is favored for certain situations as it can enhance efficiency and ease of use. A washer is still required on the nut side unless a flange nut is utilized. The serrations beneath the flange grip into the surface and assist in resisting loosening caused by vibrations.
Size: 5/16 inch-18 X 1/2 inch
Hex bolt with a serrated circular flange situated beneath the head
Flange negates the requirement for a separate washer
Serrations grip into the surface and can aid in preventing loosening
Intended for utilization with a nut (not included) or a threaded hole of identical diameter and thread size
Thread Type: Coarse, Thread Class: UNC-2A, Point Style: Blunt
Specification(s) Complied: ASME B18.2.1, ASME B18.6.3, and ASME B1.1
