Skip to content

Your cart is empty

Continue shopping

Have an account?

Log in to check out faster.

Your cart

Loading...

Estimated total

0.00 CAD

Taxes, Discounts and shipping calculated at checkout

Language

English
Français

Bolts
Nuts
Washers
Socket Screws
Contact Us
About Us

Country/region

Canada CAD $
United States USD $

Language

English
Français

Bolts
Nuts
Washers
Socket Screws
Contact Us
About Us

Search

Collection: Square Screw

Sort by:

433 products

Sort

Sort

433 products

Sort by:

Remove all

433 products

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 3/8-24 * 3" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 3/8-24 * 3" Grade 8 [Cup Point] [External Square Drive]

Regular price 3.65 $ CAD

Regular price Sale price 3.65 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 3/8-24 * 3/4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 3/8-24 * 3/4" Grade 8 [Cup Point] [External Square Drive]

Regular price 1.79 $ CAD

Regular price Sale price 1.79 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/16-24 * 1" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/16-24 * 1" Grade 8 [Cup Point] [External Square Drive]

Regular price 1.70 $ CAD

Regular price Sale price 1.70 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/16-24 * 1-1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/16-24 * 1-1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price 2.29 $ CAD

Regular price Sale price 2.29 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/16-24 * 1-1/4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/16-24 * 1-1/4" Grade 8 [Cup Point] [External Square Drive]

Regular price 1.88 $ CAD

Regular price Sale price 1.88 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/16-24 * 1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/16-24 * 1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price 1.43 $ CAD

Regular price Sale price 1.43 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/16-24 * 2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/16-24 * 2" Grade 8 [Cup Point] [External Square Drive]

Regular price 2.55 $ CAD

Regular price Sale price 2.55 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/16-24 * 3/4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/16-24 * 3/4" Grade 8 [Cup Point] [External Square Drive]

Regular price 1.57 $ CAD

Regular price Sale price 1.57 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/16-24 * 5/8" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/16-24 * 5/8" Grade 8 [Cup Point] [External Square Drive]

Regular price 1.50 $ CAD

Regular price Sale price 1.50 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 1-1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 1-1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price 7.25 $ CAD

Regular price Sale price 7.25 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 1-1/4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 1-1/4" Grade 8 [Cup Point] [External Square Drive]

Regular price 6.89 $ CAD

Regular price Sale price 6.89 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 1-3/4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 1-3/4" Grade 8 [Cup Point] [External Square Drive]

Regular price 7.65 $ CAD

Regular price Sale price 7.65 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 2" Grade 8 [Cup Point] [External Square Drive]

Regular price 7.87 $ CAD

Regular price Sale price 7.87 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price 11.58 $ CAD

Regular price Sale price 11.58 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 3" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 3" Grade 8 [Cup Point] [External Square Drive]

Regular price 12.35 $ CAD

Regular price Sale price 12.35 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 3-1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 3-1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price 13.15 $ CAD

Regular price Sale price 13.15 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 5/8-18 * 4" Grade 8 [Cup Point] [External Square Drive]

Regular price 14.28 $ CAD

Regular price Sale price 14.28 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 9/16-18 * 1" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 9/16-18 * 1" Grade 8 [Cup Point] [External Square Drive]

Regular price 5.64 $ CAD

Regular price Sale price 5.64 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 9/16-18 * 1-1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 9/16-18 * 1-1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price 6.55 $ CAD

Regular price Sale price 6.55 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 9/16-18 * 1-1/4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 9/16-18 * 1-1/4" Grade 8 [Cup Point] [External Square Drive]

Regular price 6.04 $ CAD

Regular price Sale price 6.04 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 9/16-18 * 1-3/4" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 9/16-18 * 1-3/4" Grade 8 [Cup Point] [External Square Drive]

Regular price 7.13 $ CAD

Regular price Sale price 7.13 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 9/16-18 * 2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 9/16-18 * 2" Grade 8 [Cup Point] [External Square Drive]

Regular price 8.23 $ CAD

Regular price Sale price 8.23 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 9/16-18 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 9/16-18 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

Regular price 9.67 $ CAD

Regular price Sale price 9.67 $ CAD
Unit price per
Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 9/16-18 * 3" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 9/16-18 * 3" Grade 8 [Cup Point] [External Square Drive]

Regular price 10.65 $ CAD

Regular price Sale price 10.65 $ CAD
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 1-8 * 10" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 1-8 * 10" Grade 8 [Cup Point] [External Square Drive]

Regular price 50.04 $ CAD

Regular price Sale price 50.04 $ CAD
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 1-8 * 12" Grade 8 [Cup Point] [External Square Drive]

Square Head Screw Full Thread Black-Oxide Alloy Steel 1-8 * 12" Grade 8 [Cup Point] [External Square Drive]

Regular price 63.31 $ CAD

Regular price Sale price 63.31 $ CAD
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 1-8 * 2" Grade 8 [Cup Point] [External Square Drive]

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

Regular price 6.99 $ CAD

Regular price Sale price 6.99 $ CAD
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 1-8 * 2" Grade 8 [Cup Point] [External Square Drive]

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

Regular price 12.92 $ CAD

Regular price Sale price 12.92 $ CAD
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 1-8 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

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

Regular price 7.87 $ CAD

Regular price Sale price 7.87 $ CAD
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 1-8 * 2-1/2" Grade 8 [Cup Point] [External Square Drive]

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

Regular price 14.15 $ CAD

Regular price Sale price 14.15 $ CAD
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 1-8 * 2-1/4" Grade 8 [Cup Point] [External Square Drive]

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

Regular price 13.83 $ CAD

Regular price Sale price 13.83 $ CAD
Unit price per
Square Head Screw Full Thread Black-Oxide Alloy Steel 1-8 * 3" Grade 8 [Cup Point] [External Square Drive]

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

Regular price 8.46 $ CAD

Regular price Sale price 8.46 $ CAD
Unit price per

1
2
3
4
…
14

Filter

Refine

Thread Type

Coarse Thread [UNC]
Fine Thread [UNF]

Threading

Fully Threaded

Imperial Thread (Inch)

1/4-20
1/4-28
5/16-18
5/16-24
3/8-16
3/8-24
7/16-14
1/2-13
1/2-20
9/16-18
5/8-11
5/8-18
3/4-10
3/4-16
7/8-9
1-8
1-14

British Thread (Inch)

1/4-20
1/4-28
5/16-18
3/8-16
7/16-14
5/8-11
3/4-10
7/8-9
1-8

Imperial Length (Inch)

1/4 Length
3/8 Length
1/2 Length
5/8 Length
3/4 Length
7/8 Length
1 Length
1-1/8 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
3-1/4 Length
3-1/2 Length
4 Length
4-1/2 Length
5 Length
5-1/2 Length
6 Length
6-1/2 Length
7 Length
8 Length
9 Length
10 Length
12 Length

Imperial Length (Feet)

2 Length
4 Length
6 Length
8 Length
10 Length
12 Length

Categories

Pressure screw

System of Measurement

Imperial (Inch)

MATERIAL & PLATING

Black Oxide

Grade

*Grade* 8

Shape

Square

Fasteners Type

Square Screw
Square

Point Type

Cup
Dog
Flat Point
Oval Point

Drive

Square

Head

Square

Country/region

Canada CAD $
United States USD $

Language

English
Français

Payment methods

© 2026, Les Attaches RJM

Choosing a selection results in a full page refresh.
Opens in a new window.