ARP 5/16 -18 X 5.000 in 12PT BLACK OXIDE Pack of 5 # 641-5000
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Thread Size:5/16-18 in.
Underhead Length (in):5.000 in.
Fastener Head Style:12-point
Fastener Material:Chromoly
Fastener Finish:Black oxide
Fastener Yield Strength (psi):170,000 psi
Wrench Diameter:3/8 in.
Washers Included:Yes
Quantity:Sold as a set of 5.