Skip to content
Free shipping on orders $250 and up!
Free shipping on orders $250 and up!

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

Type: Square Head Bolts
SKU 71704
Availability:
10+ in stock, ready to be shipped
Original price $5.98 - Original price $5.98
Original price
$5.98
$5.98 - $5.98
Current price $5.98

Diameter: 5/16"
Length: 1-1/2"
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.