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SQUARE MACHINE BOLTS

Used to fasten pole-line hardware and various line construction products to crossarm poles and other structures as well as attaching the wooden crossarms to a pole.

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SQ MACHINE BOLT SPECIFICATIONS

Drawing
Bolt Diameter
Body Diameter
Body Diameter
Head Diameter
Head Diameter
Head Height
Head Height
Square Width
Square Width
Square Depth
Square Depth
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
1⁄2
0.515
0.483
1.094
1.032
0.27
0.25
0.515
0.492
0.281
0.25
5⁄8
0.642
0.605
1.344
1.219
0.344
0.313
0.642
0.616
0.344
0.313
3⁄4
0.768
0.729
1.594
1.469
0.406
0.375
0.768
0.741
0.406
0.375
7⁄8
0.895
0.852
1.844
1.719
0.469
0.438
0.895
0.865
0.469
0.438
1
1.022
0.976
2.094
1.969
0.531
0.5
1.022
0.99
0.531
0.5
11⁄4*
1.277
2.85
0.531
0.5
1.25
0.625

Dimensions per ASME B18.2.1 1996

ASME only defines head dimensions up to 1-1/2". Dimensions for 1-3/4 and 2" are approximate and not covered under the ASME dimensional specifications.

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© 2025 Centennial Bolt, Inc.

CONTACT

Phone: 800.321.9996

Fax: 303.371.0805

Email: sales@centennialbolt.com

Corporate Office:

4930 Fox Street, Suite A

Denver, CO 80216-1849

HOURS

Mon - Fri: 7:30am - 4:30pm

​​Saturday & Sunday: Closed

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