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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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1/2-13 X 2in SQ HEAD BOLT 316S/S

1/2-13 X 2in SQ HEAD BOLT 316S/S

Item #: /BIRD72

1/2-13 X 2in SQ HEAD BOLT 316S/S #VPR3-367-200

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7/8-9 X 7 SQ HD BOLT,SQ NUT & HVY LOCK

7/8-9 X 7 SQ HD BOLT,SQ NUT & HVY LOCK

Item #: /MBTA08

7/8-9 X 7 SQ HD BOLT,SQ NUT & HVY LOCK HDG

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1-8 X 2 1/2 SQUARE HEAD BOLT GR 5 PLN

1-8 X 2 1/2 SQUARE HEAD BOLT GR 5 PLN

Item #: 100C250SHB5P

1-8 X 2 1/2 SQUARE HEAD BOLT GR 5 PLN

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1-8 X 4 1/2 SQUARE HEAD TAP BOLT GR-8

1-8 X 4 1/2 SQUARE HEAD TAP BOLT GR-8

Item #: 100C450SHU8P

1-8 X 4 1/2 SQUARE HEAD TAP BOLT GR-8 PLN

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1-8 X 8 SQUARE HEAD BOLT ZINC

1-8 X 8 SQUARE HEAD BOLT ZINC

Item #: 100C800SHB-Z

1-8 X 8 SQUARE HEAD BOLT ZINC

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1-8 X 8 SQUARE HEAD TAP BOLT GR 8 PLAIN

1-8 X 8 SQUARE HEAD TAP BOLT GR 8 PLAIN

Item #: 100C800SHU8P

1-8 X 8 SQUARE HEAD TAP BOLT GR 8 PLAIN

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1 1/4-7 X 10 SQUARE HEAD BOLT GR-5 PLN

1 1/4-7 X 10 SQUARE HEAD BOLT GR-5 PLN

Item #: 125C1000SHB5P

1 1/4-7 X 10 SQUARE HEAD BOLT GR-5 PLN

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