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5/16"-18 x 4" Zinc Plated Grade 2 / A307 Steel Coarse Thread Square Head Bolts

5/16"-18 x 4" Zinc Plated Grade 2 / A307 Steel Coarse Thread Square Head Bolts

Type: Square Head Bolts
SKU 71711
Availability:
10+ in stock, ready to be shipped
Availability:
10+ in stock, ready to be shipped
$7.23 - $8.91
$8.91
$7.23 - $8.91
$8.91
Box Size: 10 pcs.

Diameter: 5/16"
Length: 4"
Material: Steel
Finish: Zinc
Head Style: Square (1/2" Wrench)
Thread Size: 18 (Coarse)
Hardness: Grade 2 / A307
Type: Square Head Bolt
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.