Hex Machine Bolts, ASTM A307, Coarse Thread, Zinc Plated – 1/4 - 5/16 - 3/8"

Also known as:

Hex Bolts, Square Head Bolts

Square Machine Bolts are easily gripped by a hand wrench due to the large bearing area design. Hex Machine Bolts tend to be larger than hex bolts—up to 1-1/2" in diameter or more, and up to 20" in length. Hot Dip Galvanized Hex Nuts, which are tapped oversize, must be used with Hot Dip Galvanized Machine Bolts. The length of machine bolts is measured from under the head to the tip.

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Code	Product	Qty.	Package	Qty.	Carton
BL132-5532	5/16-18 x 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$25.30 $0.253 ea	2,800 pcs 50+ lbs	$177.75 $0.064 ea
BL132-7532	5/16-18 x 5/8" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$6.20 $0.062 ea	2,250 pcs	$146.94 $0.066 ea
BL132-9532	5/16-18 x 3/4" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$7.97 $0.080 ea	2,000 pcs	$138.46 $0.070 ea
BL132-1532	5/16-18 x 7/8" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$9.69 $0.097 ea	2,000 pcs 50+ lbs	$157.06 $0.079 ea
BL132-3532	5/16-18 x 1" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$9.31 $0.094 ea	2,000 pcs 50+ lbs	$181.32 $0.091 ea
BL132-7542	5/16-18 x 1 1/4" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$11.08 $0.111 ea	1,600 pcs 50+ lbs	$161.69 $0.102 ea
BL132-9542	5/16-18 x 1 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$12.85 $0.129 ea	1,500 pcs 50+ lbs	$166.43 $0.111 ea
BL132-1542	5/16-18 x 1 3/4" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$13.48 $0.135 ea	1,300 pcs 50+ lbs	$173.38 $0.134 ea
BL132-3542	5/16-18 x 2" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$16.41 $0.165 ea	1,100 pcs 50+ lbs	$158.45 $0.145 ea
BL132-5552	5/16-18 x 2 1/4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$11.24 $0.225 ea	900 pcs 50+ lbs	$139.23 $0.155 ea
BL132-7552	5/16-18 x 2 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$16.29 $0.326 ea	900 pcs 50+ lbs	$139.28 $0.155 ea
BL132-9552	5/16-18 x 2 3/4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$14.03 $0.281 ea	750 pcs 50+ lbs	$148.36 $0.198 ea
BL132-1552	5/16-18 x 3" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$10.12 $0.203 ea	700 pcs 50+ lbs	$146.91 $0.210 ea
BL132-3552	5/16-18 x 3 1/4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$13.12 $0.263 ea	600 pcs	$127.60 $0.213 ea
BL132-5562	5/16-18 x 3 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$15.22 $0.305 ea	600 pcs 50+ lbs	$141.57 $0.236 ea
BL132-7562	5/16-18 x 3 3/4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$9.23 $0.185 ea Quantity
BL132-9562	5/16-18 x 4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$13.33 $0.267 ea	450 pcs	$109.18 $0.243 ea
BL132-1562	5/16-18 x 4 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	25 pcs	$8.77 $0.351 ea	400 pcs	$115.16 $0.288 ea
BL132-5572	5/16-18 x 5" Hex Head Bolt, A307 Grade A, Zinc Plated	25 pcs	$10.09 $0.404 ea	300 pcs	$103.35 $0.345 ea
BL132-7572	5/16-18 x 5 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	25 pcs	$11.10 $0.444 ea	300 pcs	$102.85 $0.343 ea
BL132-9572	5/16-18 x 6" Hex Head Bolt, A307 Grade A, Zinc Plated	25 pcs	$16.98 $0.680 ea	300 pcs	$113.02 $0.377 ea
BL132-1572	5/16-18 x 6 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	25 pcs	$22.17 $0.887 ea	300 pcs	$126.38 $0.422 ea
BL132-3572	5/16-18 x 7" Hex Head Bolt, A307 Grade A, Zinc Plated	25 pcs	$24.79 $0.992 ea Quantity
BL132-7582	5/16-18 x 8" Hex Head Bolt, A307 Grade A, Zinc Plated	25 pcs	$19.04 $0.762 ea	200 pcs	$120.77 $0.604 ea
BL132-9582	3/8-16 x 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$9.50 $0.095 ea	1,500 pcs	$137.38 $0.092 ea

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