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Material Grade
Finish
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Specs Met
Carriage Bolts

Carriage Bolts

A square neck holds these bolts in place to resist turning when fastening with a nut, and the round head provides a smooth finish. Carriage bolts are often used where access to the head is limited.

High-Strength Steel

Grade 8 alloy steel is a high-strength material for demanding applications. It is magnetic.

Plain Alloy Steel

1/4"-20

5/16"-18

3/8"-16

1/2"-13

5/8"-11

3/4"-10

Medium-Strength Steel

Grade 5 steel provides good wear resistance and strength. It is magnetic.

Plain Steel

1/2"-13

5/8"-11

3/4"-10

Zinc Plated Steel

1/4"-20

5/16"-18

3/8"-16

1/2"-13

5/8"-11

3/4"-10

Chrome Plated Steel

1/4"-20

5/16"-18

3/8"-16

7/16"-14

Low-Strength Steel

Grade 2 and Grade A steels are for light duty use. These materials are magnetic.

Plain Steel

5/16"-18

Zinc Plated Steel

1/4"-20

5/16"-18

3/8"-16

7/16"-14

1/2"-13

5/8"-11

3/4"-10

Galvanized Steel

1/4"-20

5/16"-18

3/8"-16

1/2"-13

5/8"-11

Stainless Steel

Stainless steel has a naturally corrosion-resistant surface that continues to protect the material from environmental contaminants even if scratched. It may be magnetic.

18-8 Stainless Steel

1/4"-20

5/16"-18

3/8"-16

1/2"-13

Assortments