5/16″-18 x 3″ Zinc Grade 2 / A307 Square Head Bolts (10 pcs.)
USD 13.75 USD
Specifications
| Brand | Unbranded |
| UPC | 738287717082 |
Diameter: 5/16" Length: 3" 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.