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5/16"-18 x 1-3/8" Zinc Plated Grade 2 / A307 Steel Coarse Thread Square Head Bolts

Type: Square Head Bolts
SKU 71703
Availability:
10+ in stock, ready to be shipped
Original price $5.35 - Original price $5.35
Original price
$5.35
$5.35 - $5.35
Current price $5.35

Diameter: 5/16"
Length: 1-3/8"
Material: Steel
Finish: Zinc
Head Style: Square (1/2" Wrench)
Thread Size: 18 (Coarse)
Hardness: Grade 2 / A307
Type: Square Head Bolt

Box of 10.

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.