Prime-Line 9090855 Serrated Flange Bolts, 5/16 In.-18 X 1/2 In., Zinc Plated Case Hardened Steel (25 Pack)
Special Features
- Size: 5/16 inch-18 X 1/2 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
- Thread Type: Coarse, Thread Class: UNC-2A, Point Style: Blunt
- Specification(s) Met: ASME B18.2.1, ASME B18.6.3, and ASME B1.1
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