Free Shipping on Orders $25+

Now Stocking USA Made Grade 8 Hex Bolts, Nuts, and Washers! (Click for Details)

5/16"-18x6" Square Head Bolts Grade A307 Hot Dip Galvanized

Diameter/Pitch: 5/16"-18
Length Under Head: 6"
Grade: A307
Finish: Hot Dip Galvanized
Coarse / Fine Threads: Coarse
Partial / Full Threads: Partial
Wrench Size: 1/2"
Part Number: 31C600SHB307G

Pricing Options