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Square Head Bolts

Square Head Bolts

Square Head Bolts have square-shaped external wrenching heads, which offer a large bearing area for positive gripping. These are best used in tight or dark spaces where a machinist or fabricator must tighten the bolt blind.
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223 products

5/16"-18x1" Square Head Bolts Grade A307 Hot Dip Galvanized

5/16"-18x1" Square Head Bolts Grade A307 Hot Dip Galvanized

From $0.39
From $0.39
5/16"-18x1" Square Head Bolts Grade A307 Zinc Clear

5/16"-18x1" Square Head Bolts Grade A307 Zinc Clear

From $0.51
From $0.51
5/16"-18x1-1/4" Square Head Bolts Grade A307 Hot Dip Galvanized

5/16"-18x1-1/4" Square Head Bolts Grade A307 Hot Dip Galvanized

From $0.44
From $0.44
5/16"-18x1-1/4" Square Head Bolts Grade A307 Zinc Clear

5/16"-18x1-1/4" Square Head Bolts Grade A307 Zinc Clear

From $0.60
From $0.60
5/16"-18x1-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

5/16"-18x1-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

From $0.66
From $0.66
5/16"-18x1-1/2" Square Head Bolts Grade A307 Zinc Clear

5/16"-18x1-1/2" Square Head Bolts Grade A307 Zinc Clear

From $0.49
From $0.49
5/16"-18x1-3/4" Square Head Bolts Grade A307 Hot Dip Galvanized

5/16"-18x1-3/4" Square Head Bolts Grade A307 Hot Dip Galvanized

From $0.73
From $0.73
5/16"-18x1-3/4" Square Head Bolts Grade A307 Zinc Clear

5/16"-18x1-3/4" Square Head Bolts Grade A307 Zinc Clear

From $0.54
From $0.54
5/16"-18x2" Square Head Bolts Grade A307 Hot Dip Galvanized

5/16"-18x2" Square Head Bolts Grade A307 Hot Dip Galvanized

From $0.79
From $0.79
5/16"-18x2" Square Head Bolts Grade A307 Zinc Clear

5/16"-18x2" Square Head Bolts Grade A307 Zinc Clear

From $0.65
From $0.65
5/16"-18x2-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

5/16"-18x2-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

From $0.97
From $0.97
5/16"-18x2-1/2" Square Head Bolts Grade A307 Zinc Clear

5/16"-18x2-1/2" Square Head Bolts Grade A307 Zinc Clear

From $0.74
From $0.74
5/16"-18x3" Square Head Bolts Grade A307 Hot Dip Galvanized

5/16"-18x3" Square Head Bolts Grade A307 Hot Dip Galvanized

From $1.15
From $1.15
5/16"-18x3" Square Head Bolts Grade A307 Zinc Clear

5/16"-18x3" Square Head Bolts Grade A307 Zinc Clear

From $0.92
From $0.92
5/16"-18x3-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

5/16"-18x3-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

From $1.32
From $1.32
5/16"-18x3-1/2" Square Head Bolts Grade A307 Zinc Clear

5/16"-18x3-1/2" Square Head Bolts Grade A307 Zinc Clear

From $1.04
From $1.04
5/16"-18x4" Square Head Bolts Grade A307 Hot Dip Galvanized

5/16"-18x4" Square Head Bolts Grade A307 Hot Dip Galvanized

From $1.47
From $1.47
5/16"-18x4" Square Head Bolts Grade A307 Zinc Clear

5/16"-18x4" Square Head Bolts Grade A307 Zinc Clear

From $1.17
From $1.17
5/16"-18x5" Square Head Bolts Grade A307 Hot Dip Galvanized

5/16"-18x5" Square Head Bolts Grade A307 Hot Dip Galvanized

From $1.85
From $1.85
5/16"-18x5" Square Head Bolts Grade A307 Zinc Clear

5/16"-18x5" Square Head Bolts Grade A307 Zinc Clear

From $1.46
From $1.46

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