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Square Head Bolts

Square head bolts have a square head which enables easier wrench grip for tightening and a larger bearing area for gripping. They are usually used to match existing fasteners in an older structure.

Fasteners/Bolts/Square Head Bolts 
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5/16-18 X 1 1/4 SQUARE HEAD BOLT GR5 Z&Y

5/16-18 X 1 1/4 SQUARE HEAD BOLT GR5 Z&Y

Item #: 31C125SHB5Y

5/16-18 X 1 1/4 SQUARE HEAD BOLT GR5 Z&Y GRADE 5 ZINC & YELLOW (Cr3)

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5/16-18 X 1 1/4 SQUARE HEAD BOLT PLAIN

5/16-18 X 1 1/4 SQUARE HEAD BOLT PLAIN

Item #: 31C125SHB-P

5/16-18 X 1 1/4 SQUARE HEAD BOLT PLAIN

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5/16-18 X 3 SQUARE HEAD BOLT GR2 PLAIN

5/16-18 X 3 SQUARE HEAD BOLT GR2 PLAIN

Item #: 31C300SHB-P

5/16-18 X 3 SQUARE HEAD BOLT GR2 PLAIN

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M20-2.5 X 180 T-BOLT CL 4.6 DIN 186A PL

M20-2.5 X 180 T-BOLT CL 4.6 DIN 186A PL

Item #: .20C180MTB-P

M20-2.5 X 180 T-BOLT CL 4.6 DIN 186A PL

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M20-2.5 X 120 T-BOLT CL 4.6 DIN 186A PL

M20-2.5 X 120 T-BOLT CL 4.6 DIN 186A PL

Item #: .20C120MTB-P

M20-2.5 X 120 T-BOLT CL 4.6 DIN 186A PL

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M20-2.5 X 140 T-BOLT CL 4.6 DIN 186A PL

M20-2.5 X 140 T-BOLT CL 4.6 DIN 186A PL

Item #: .20C140MTB-P

M20-2.5 X 140 T-BOLT CL 4.6 DIN 186A PL

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M20-2.5 X 160 T-BOLT CL 4.6 DIN 186A PL

M20-2.5 X 160 T-BOLT CL 4.6 DIN 186A PL

Item #: .20C160MTB-P

M20-2.5 X 160 T-BOLT CL 4.6 DIN 186A PL

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1 1/8-7 X 5 1/2 SQ HEAD BOLT GR 8 PLN

1 1/8-7 X 5 1/2 SQ HEAD BOLT GR 8 PLN

Item #: 112C550SHB8P

1 1/8-7 X 5 1/2 SQ HEAD BOLT GR 8 PLN

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1 1/2-6 X 10 SQUARE HEAD BOLT GR-5 PLN

1 1/2-6 X 10 SQUARE HEAD BOLT GR-5 PLN

Item #: 150C1000SHB5P

1 1/2-6 X 10 SQUARE HEAD BOLT GR-5 PLN

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1 1/2-6 X 5 SQUARE HEAD BOLT GR 5 PLN

1 1/2-6 X 5 SQUARE HEAD BOLT GR 5 PLN

Item #: 150C500SHB5P

1 1/2-6 X 5 SQUARE HEAD BOLT GR 5 PLN

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