1/4"-20 x 1" 18-8 Stainless Steel Coarse Thread Hurricane Square Head Track Bolts

Diameter: 1/4"
Length: 1"
Material: Stainless Steel
Head Style: Square (7/16" Wrench)
Thread Size: 20 (Coarse)
Thread Length: Full
Hardness: 18-8
Type: Square Head Bolt

Box of 50.

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.