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Bolts
Nuts
Washers
Socket Screws
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Collection: Square

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61 of 869 products

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price $2.00

Regular price Sale price $2.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price $5.00

Regular price Sale price $5.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price $4.00

Regular price Sale price $4.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price $5.00

Regular price Sale price $5.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price $5.00

Regular price Sale price $5.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-1/4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-1/4" Grade 8 [Cup Point] [External Square Drive]

Regular price $2.00

Regular price Sale price $2.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-1/4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-1/4" Grade 8 [Cup Point] [External Square Drive]

Regular price $4.00

Regular price Sale price $4.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-3/4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 2-3/4" Grade 8 [Cup Point] [External Square Drive]

Regular price $3.00

Regular price Sale price $3.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3" Grade 8 [Cup Point] [External Square Drive]

Regular price $3.00

Regular price Sale price $3.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3" Grade 8 [Cup Point] [External Square Drive]

Regular price $8.00

Regular price Sale price $8.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3-1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3-1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price $16.00

Regular price Sale price $16.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3-1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3-1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price $6.00

Regular price Sale price $6.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3/4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3/4" Grade 8 [Cup Point] [External Square Drive]

Regular price $1.00

Regular price Sale price $1.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3/4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3/4" Grade 8 [Cup Point] [External Square Drive]

Regular price $3.00

Regular price Sale price $3.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3/4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3/4" Grade 8 [Cup Point] [External Square Drive]

Regular price $2.00

Regular price Sale price $2.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3/4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 3/4" Grade 8 [Cup Point] [External Square Drive]

Regular price $3.00

Regular price Sale price $3.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 4" Grade 8 [Cup Point] [External Square Drive]

Regular price $3.00

Regular price Sale price $3.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 4" Grade 8 [Cup Point] [External Square Drive]

Regular price $7.00

Regular price Sale price $7.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 4-1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 4-1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price $3.00

Regular price Sale price $3.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 5" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 5" Grade 8 [Cup Point] [External Square Drive]

Regular price $3.00

Regular price Sale price $3.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 5/8" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 5/8" Grade 8 [Cup Point] [External Square Drive]

Regular price $1.00

Regular price Sale price $1.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 5/8" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 5/8" Grade 8 [Cup Point] [External Square Drive]

Regular price $2.00

Regular price Sale price $2.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 6" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 6" Grade 8 [Cup Point] [External Square Drive]

Regular price $17.00

Regular price Sale price $17.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 7" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 7" Grade 8 [Cup Point] [External Square Drive]

Regular price $18.00

Regular price Sale price $18.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 7/8" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 7/8" Grade 8 [Cup Point] [External Square Drive]

Regular price $1.00

Regular price Sale price $1.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 7/8" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 7/8" Grade 8 [Cup Point] [External Square Drive]

Regular price $2.00

Regular price Sale price $2.00
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 8" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 3/8-16 * 8" Grade 8 [Cup Point] [External Square Drive]

Regular price $20.00

Regular price Sale price $20.00
Unit price per
Square Nut Zinc Plated 3/8-16 Grade 2

Square Nut Zinc Plated 3/8-16 Grade 2

Regular price From $1.00

Regular price Sale price From $1.00
Unit price per
Square Nut Zinc Plated 3/8-16 Grade 2

Square Nut Zinc Plated 3/8-16 Grade 2

Regular price From $1.00

Regular price Sale price From $1.00
Unit price per

1
2

Filter

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Thread Type

Coarse Thread [UNC]

Threading

Fully Threaded
Partially Threaded

Imperial Thread (Inch)

3/8-16

British Thread (Inch)

3/8-16

Imperial Length (Inch)

1/2 Length
5/8 Length
3/4 Length
7/8 Length
1 Length
1-1/4 Length
1-1/2 Length
1-3/4 Length
2 Length
2-1/4 Length
2-1/2 Length
2-3/4 Length
3 Length
3-1/2 Length
4 Length
4-1/2 Length
5 Length
6 Length
7 Length
8 Length

Imperial Length (Feet)

2 Length
4 Length
6 Length
8 Length

Categories

Bolt
nut
Pressure screw

System of Measurement

Imperial (Inch)

MATERIAL & PLATING

Black Oxide
Steel
Zinc

Grade

*Grade* 2
*Grade* 8

Shape

Square

Fasteners Type

Square Screw
Square

Thread Direction

Right Thread

Point Type

Cup
Dog
Flat Point
Oval Point

Drive

Square

Head

Square
Standard

Classification

Astm A307

Country/region

Canada CAD $
United States USD $

Payment methods

© 2025, Les Attaches RJM

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