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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

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

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

Regular price From $1.69
Sale price From $1.69 Regular price
3/8"-16x3" Square Head Bolts Grade A307 Zinc Clear

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

Regular price From $1.37
Sale price From $1.37 Regular price
3/8"-16x3-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x3-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $1.96
Sale price From $1.96 Regular price
3/8"-16x3-1/2" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x3-1/2" Square Head Bolts Grade A307 Zinc Clear

Regular price From $1.56
Sale price From $1.56 Regular price
3/8"-16x4" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x4" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $2.49
Sale price From $2.49 Regular price
3/8"-16x4" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x4" Square Head Bolts Grade A307 Zinc Clear

Regular price From $1.85
Sale price From $1.85 Regular price
3/8"-16x4-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x4-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $2.54
Sale price From $2.54 Regular price
3/8"-16x4-1/2" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x4-1/2" Square Head Bolts Grade A307 Zinc Clear

Regular price From $1.94
Sale price From $1.94 Regular price
3/8"-16x5" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x5" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $2.70
Sale price From $2.70 Regular price
3/8"-16x5" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x5" Square Head Bolts Grade A307 Zinc Clear

Regular price From $2.12
Sale price From $2.12 Regular price
3/8"-16x5-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x5-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $2.93
Sale price From $2.93 Regular price
3/8"-16x5-1/2" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x5-1/2" Square Head Bolts Grade A307 Zinc Clear

Regular price From $2.35
Sale price From $2.35 Regular price
3/8"-16x6" Square Head Bolts Grade A307 Hot Dip Galvanized

3/8"-16x6" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $3.28
Sale price From $3.28 Regular price
3/8"-16x6" Square Head Bolts Grade A307 Zinc Clear

3/8"-16x6" Square Head Bolts Grade A307 Zinc Clear

Regular price From $2.53
Sale price From $2.53 Regular price
1/2"-13x1" Square Head Bolts Grade A307 Hot Dip Galvanized

1/2"-13x1" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $1.52
Sale price From $1.52 Regular price
1/2"-13x1" Square Head Bolts Grade A307 Zinc Clear

1/2"-13x1" Square Head Bolts Grade A307 Zinc Clear

Regular price From $1.13
Sale price From $1.13 Regular price
1/2"-13x1-1/4" Square Head Bolts Grade A307 Hot Dip Galvanized

1/2"-13x1-1/4" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $1.66
Sale price From $1.66 Regular price
1/2"-13x1-1/4" Square Head Bolts Grade A307 Zinc Clear

1/2"-13x1-1/4" Square Head Bolts Grade A307 Zinc Clear

Regular price From $1.29
Sale price From $1.29 Regular price
1/2"-13x1-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

1/2"-13x1-1/2" Square Head Bolts Grade A307 Hot Dip Galvanized

Regular price From $1.95
Sale price From $1.95 Regular price
1/2"-13x1-1/2" Square Head Bolts Grade A307 Zinc Clear

1/2"-13x1-1/2" Square Head Bolts Grade A307 Zinc Clear

Regular price From $1.43
Sale price From $1.43 Regular price