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Home / Connectors and Fasteners / Grade 12.9 External Hex Screws and Nuts Complete Set High-Strength Bolts with Flat and Spring Washers M6-M24

Attributes

Brand -
Category Industrial Small Parts / Connectors and Fasteners
Origin -
Material Alloy Steel
Strength Grade 12.9
Surface Finish Black Oxide
Thread Type Metric Coarse
Head Style External Hex
Drive Size Hexagonal
Kit Includes Screws, Nuts, Washers
Size Range M6 to M24
Package Weight 3.5 kg
Standard DIN 933 / ISO 4017

5 reviews

A

Anonymous

Mar 17, 2026

Rating: 5/5

Excellent Quality

These bolts are very strong and held up well under high torque.

A

Anonymous

Feb 25, 2026

Rating: 4/5

Solid Product

Good strength, but the box was a bit heavy to ship.

A

Anonymous

Feb 06, 2026

Rating: 5/5

Professional Grade

Exactly what specified for machinery repair. No issues.

A

Anonymous

Jan 29, 2026

Rating: 5/5

Complete Kit

Had every size I needed for my automotive project. Great value.

A

Anonymous

Jan 25, 2026

Rating: 5/5

Fast Shipping

Arrived well organized in compartments. Very satisfied.

5 FAQ

Q: Are these screws made of stainless steel?

A: No, these are made of high-strength alloy steel with a black oxide finish.

Q: Is there protection against rust?

A: The black oxide coating provides some corrosion resistance, but not equal to stainless steel.

Q: Does the kit include nuts and washers?

A: Yes, the kit includes matching nuts, flat washers, and spring washers.

Q: What is the recommended torque for M10 bolts?

A: Please refer to standard torque charts for Grade 12.9 fasteners based on your application.

Q: Are these sizes metric or imperial?

A: All sizes in this kit are metric, ranging from M6 to M24.

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