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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 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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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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5/8-11 X 1 3/4 SQ HD BOLT GR 5 WITH NUT

5/8-11 X 1 3/4 SQ HD BOLT GR 5 WITH NUT

Item #: /29545REVB

5/8-11 X 1 3/4 SQ HD BOLT GR 5 WITH NUT ASSEMBLED ONTO BOLT. GRADE 5 PLAIN HEX NUT

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M12-1.75X 31.75 SQ HEAD 904L

M12-1.75X 31.75 SQ HEAD 904L

Item #: /BIRD71

M12-1.75X 31.75 SQ HEAD 904L PRT#TPR3-367-00080 R5

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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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3/8-16 X 1 SQ BOLT & SQ NUT ASSBLY ZINC.

3/8-16 X 1 SQ BOLT & SQ NUT ASSBLY ZINC.

Item #: /BOSTO10

3/8-16 X 1 SQ BOLT & SQ NUT ASSBLY ZINC.

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1 1/4-7 X 3 1/2 SQ HEAD BOLT GR 5 PLN

1 1/4-7 X 3 1/2 SQ HEAD BOLT GR 5 PLN

Item #: 125C350SHB5P

1 1/4-7 X 3 1/2 SQ HEAD BOLT GR 5 PLN

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1 1/4-7 X 7 SQUARE HEAD BOLT PLAIN

1 1/4-7 X 7 SQUARE HEAD BOLT PLAIN

Item #: 125C700SHB-P

1 1/4-7 X 7 SQUARE HEAD BOLT PLAIN

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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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