5/16 -18 x 3 Zinc Grade 2 / A307 Square Head Bolts (8 pcs.)

5/16 -18 x 3 Zinc Grade 2 / A307 Square Head Bolts (8 pcs.)
Hard-to-Find Fastener
sku: 640385908
$11.09
Shipping from: United States
   Description
Diameter: 5/16 Length: 3 Material: Steel Finish: Zinc Head Style: Square (1/2 Wrench) Thread Size: 18 (Coarse) Hardness: Grade 2 / A307 Type: Square Head Bolt Box of 8. A square head bolt has a four-sided head. Compared to standard hex bolts square bolts have a greater surface in contact with the part being fastened and therefore provide greater resistance to loosening (though also greater resistance to tightening). Square bolts are typically mated with square-headed nuts.
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