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Home / Connectors and Fasteners / Grade 12.9 High-Strength Socket Head Hex Bolt and Nut Combo Set, Flat and Spring Washers M2-M12

Attributes

Brand -
Category Industrial Small Parts / Connectors and Fasteners
Origin -
Material Alloy Steel
Strength Grade Class 12.9
Head Style Socket Head Cap
Drive Type Hex Socket (Allen)
Thread Size Range M2 to M12
Thread Standard Metric Coarse
Surface Finish Black Oxide
Kit Contents Screws, Nuts, Flat Washers, Spring Washers
Storage Case Durable Plastic Organizer
Recommended Use Machinery Assembly, Automotive Repair

5 reviews

A

Anonymous

Apr 24, 2026

Rating: 5/5

Excellent quality kit

Great assortment for my workshop. The 12.9 grade is genuine and holds up well under torque.

A

Anonymous

Mar 22, 2026

Rating: 5/5

Perfect for repairs

Saved me a trip to the hardware store. Case is sturdy and keeps everything organized.

A

Anonymous

Mar 11, 2026

Rating: 4/5

Good value

Most sizes are useful. Wish there were more M8 bolts included in the mix.

A

Anonymous

Feb 07, 2026

Rating: 5/5

Professional grade

Using these for engine work. No stripping issues on the hex sockets.

A

Anonymous

Jan 28, 2026

Rating: 5/5

Well organized

Labels on the box make finding sizes easy. Fast shipping too.

5 FAQ

Q: Are the threads metric or imperial?

A: All threads in this kit are metric standard.

Q: Can I buy refills for specific sizes?

A: Contact support for bulk orders of specific sizes.

Q: Is this stainless steel?

A: No, this is alloy steel treated for high tensile strength.

Q: Is there a certificate of analysis?

A: Mill certificates are available upon request for bulk orders.

Q: Does it include an Allen key?

A: No, tools are not included, only the fasteners and storage case.

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