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	$147.53 $0.033 ea
BL122-4582	1/4-20 x 5/8" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$3.38 $0.034 ea	4,000 pcs 50+ lbs	$134.67 $0.034 ea
BL122-6582	1/4-20 x 3/4" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$3.84 $0.039 ea	4,000 pcs 50+ lbs	$141.80 $0.036 ea
BL122-8582	1/4-20 x 7/8" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$4.34 $0.044 ea	3,000 pcs	$111.33 $0.038 ea
BL122-0582	1/4-20 x 1" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$4.57 $0.046 ea	3,000 pcs 50+ lbs	$118.91 $0.040 ea
BL122-2582	1/4-20 x 1 1/4" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$5.50 $0.055 ea	2,400 pcs 50+ lbs	$118.41 $0.050 ea
BL122-5592	1/4-20 x 1 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$6.41 $0.065 ea	2,200 pcs 50+ lbs	$133.57 $0.061 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	$115.26 $0.065 ea
BL122-9592	1/4-20 x 2" Hex Head Bolt, A307 Grade A, Zinc Plated	100 pcs	$8.22 $0.083 ea	1,600 pcs 50+ lbs	$119.00 $0.075 ea
BL122-1592	1/4-20 x 2 1/4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$4.74 $0.095 ea	1,300 pcs	$105.93 $0.082 ea
BL122-3592	1/4-20 x 2 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$5.38 $0.108 ea	1,300 pcs 50+ lbs	$113.11 $0.088 ea
BL122-5502	1/4-20 x 2 3/4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$5.47 $0.110 ea	900 pcs	$84.83 $0.095 ea
BL122-7502	1/4-20 x 3" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$5.40 $0.108 ea	900 pcs	$101.17 $0.113 ea
BL122-9502	1/4-20 x 3 1/4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$6.93 $0.139 ea	800 pcs	$88.26 $0.111 ea
BL122-1502	1/4-20 x 3 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$6.86 $0.138 ea	750 pcs	$93.91 $0.126 ea
BL122-3502	1/4-20 x 3 3/4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$7.82 $0.157 ea	700 pcs	$91.83 $0.132 ea
BL122-5512	1/4-20 x 4" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$10.28 $0.206 ea	700 pcs	$94.14 $0.135 ea
BL122-9512	1/4-20 x 4 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$9.72 $0.195 ea	600 pcs	$96.55 $0.161 ea
BL122-1512	1/4-20 x 5" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$7.87 $0.158 ea	600 pcs	$100.95 $0.169 ea
BL122-3512	1/4-20 x 5 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$13.10 $0.262 ea	600 pcs	$103.70 $0.173 ea
BL122-5522	1/4-20 x 6" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$10.89 $0.218 ea	600 pcs 50+ lbs	$122.46 $0.205 ea
BL122-7522	1/4-20 x 6 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$16.45 $0.329 ea	600 pcs 50+ lbs	$141.95 $0.237 ea
BL122-9522	1/4-20 x 7" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$20.78 $0.416 ea	400 pcs	$114.61 $0.287 ea
BL122-1522	1/4-20 x 7 1/2" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$22.03 $0.441 ea
BL122-3522	1/4-20 x 8" Hex Head Bolt, A307 Grade A, Zinc Plated	50 pcs	$20.00 $0.400 ea	350 pcs	$112.45 $0.322 ea

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