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Square Head Bolts

Collection: 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"-18x6" Square Head Bolts Grade A307 Hot Dip Galvanized

5/16"-18x6" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $2.15
Sale price From $2.15 Regular price
5/16"-18x6" Square Head Bolts Grade A307 Zinc Clear

5/16"-18x6" Square Head Bolts Grade A307 Zinc Clear

Regular price From $1.75
Sale price From $1.75 Regular price
3/8"-16x3/4" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x3/4" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $0.62
Sale price From $0.62 Regular price
3/8"-16x3/4" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x3/4" Square Head Bolts Grade A307 Zinc Clear

Regular price From $0.49
Sale price From $0.49 Regular price
3/8"-16x1" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x1" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $0.76
Sale price From $0.76 Regular price
3/8"-16x1" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x1" Square Head Bolts Grade A307 Zinc Clear

Regular price From $0.54
Sale price From $0.54 Regular price
3/8"-16x1-1/4" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x1-1/4" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $0.87
Sale price From $0.87 Regular price
3/8"-16x1-1/4" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x1-1/4" Square Head Bolts Grade A307 Zinc Clear

Regular price From $0.64
Sale price From $0.64 Regular price
3/8"-16x1-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x1-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $0.95
Sale price From $0.95 Regular price
3/8"-16x1-1/2" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x1-1/2" Square Head Bolts Grade A307 Zinc Clear

Regular price From $0.76
Sale price From $0.76 Regular price
3/8"-16x1-3/4" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x1-3/4" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $1.37
Sale price From $1.37 Regular price
3/8"-16x1-3/4" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x1-3/4" Square Head Bolts Grade A307 Zinc Clear

Regular price From $0.84
Sale price From $0.84 Regular price
3/8"-16x2" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x2" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $1.28
Sale price From $1.28 Regular price
3/8"-16x2" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x2" Square Head Bolts Grade A307 Zinc Clear

Regular price From $0.97
Sale price From $0.97 Regular price
3/8"-16x2-1/4" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x2-1/4" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $1.33
Sale price From $1.33 Regular price
3/8"-16x2-1/4" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x2-1/4" Square Head Bolts Grade A307 Zinc Clear

Regular price From $1.06
Sale price From $1.06 Regular price
3/8"-16x2-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x2-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $1.41
Sale price From $1.41 Regular price
3/8"-16x2-1/2" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x2-1/2" Square Head Bolts Grade A307 Zinc Clear

Regular price From $1.11
Sale price From $1.11 Regular price
3/8"-16x2-3/4" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x2-3/4" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $1.53
Sale price From $1.53 Regular price
3/8"-16x2-3/4" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x2-3/4" Square Head Bolts Grade A307 Zinc Clear

Regular price From $1.21
Sale price From $1.21 Regular price