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5/16"-18 x 1-1/4" Zinc Grade 2 / A307 Square Head Bolts (10 pcs.)

Type: Square Head Bolts
Part Number: 87677
Original price $7.69 - Original price $7.69
Original price
$7.69
$7.69 - $7.69
Current price $7.69

Diameter: 5/16"
Length: 1-1/4"
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.