Prime-Line 9090912 Serrated Flange Bolts, 5/16 In.-18 X 1 In., Zinc Plated Case Hardened (25 Pack)
$14.42
by PRIME-LINE
Size: 5/16 inch-18 X 1 inch Hex bolt with a serrated circular flange under the head Flange eliminates need for separate washer Serrations bite into surface and can help to prevent loosening Designed for use with a nut (not included) or a threaded hole of the same diameter and thread size