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
BL122-2572	1/4-20 x 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$4.82 $0.049 ea	4,500 pcs 50+ lbs	$177.03 $0.040 ea
BL122-4582	1/4-20 x 5/8" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$4.22 $0.043 ea	4,000 pcs 50+ lbs	$161.60 $0.041 ea
BL122-6582	1/4-20 x 3/4" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$4.80 $0.048 ea	4,000 pcs 50+ lbs	$170.16 $0.043 ea
BL122-8582	1/4-20 x 7/8" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$5.43 $0.055 ea	3,000 pcs	$133.59 $0.045 ea
BL122-0582	1/4-20 x 1" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$5.71 $0.058 ea	3,000 pcs 50+ lbs	$142.69 $0.048 ea
BL122-2582	1/4-20 x 1 1/4" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$6.87 $0.069 ea	2,400 pcs 50+ lbs	$142.09 $0.060 ea
BL122-5592	1/4-20 x 1 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$8.01 $0.081 ea	2,200 pcs 50+ lbs	$160.29 $0.073 ea
BL122-7592	1/4-20 x 1 3/4" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$10.77 $0.108 ea	1,800 pcs 50+ lbs	$138.31 $0.077 ea
BL122-9592	1/4-20 x 2" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$10.27 $0.103 ea	1,600 pcs 50+ lbs	$142.79 $0.090 ea
BL122-1592	1/4-20 x 2 1/4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$5.93 $0.119 ea	1,300 pcs	$127.12 $0.098 ea
BL122-3592	1/4-20 x 2 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$6.72 $0.135 ea	1,300 pcs 50+ lbs	$135.73 $0.105 ea
BL122-5502	1/4-20 x 2 3/4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$6.84 $0.137 ea	900 pcs	$101.80 $0.114 ea
BL122-7502	1/4-20 x 3" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$6.74 $0.135 ea	900 pcs	$121.40 $0.135 ea
BL122-9502	1/4-20 x 3 1/4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$8.66 $0.174 ea	800 pcs	$105.91 $0.133 ea
BL122-1502	1/4-20 x 3 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$8.57 $0.172 ea	750 pcs	$112.69 $0.151 ea
BL122-3502	1/4-20 x 3 3/4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$9.77 $0.196 ea	700 pcs	$110.19 $0.158 ea
BL122-5512	1/4-20 x 4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$12.85 $0.257 ea	700 pcs	$112.97 $0.162 ea
BL122-9512	1/4-20 x 4 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$12.14 $0.243 ea	600 pcs	$115.86 $0.194 ea
BL122-1512	1/4-20 x 5" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$9.84 $0.197 ea	600 pcs	$121.14 $0.202 ea
BL122-3512	1/4-20 x 5 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$16.38 $0.328 ea	600 pcs	$124.44 $0.208 ea
BL122-5522	1/4-20 x 6" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$13.61 $0.273 ea	600 pcs 50+ lbs	$146.95 $0.245 ea
BL122-7522	1/4-20 x 6 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$20.56 $0.412 ea	600 pcs 50+ lbs	$170.34 $0.284 ea
BL122-9522	1/4-20 x 7" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$25.97 $0.520 ea	400 pcs	$137.53 $0.344 ea
BL122-1522	1/4-20 x 7 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$27.54 $0.551 ea
BL122-3522	1/4-20 x 8" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$25.00 $0.500 ea	350 pcs	$134.94 $0.386 ea

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