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Home / Connectors and Fasteners / Grade 12.9 High-Strength Hex Nuts, Flat Washers, and Spring Washers Kit M2-M30
Connectors and Fasteners

Attributes

Brand -
Category Industrial Small Parts / Connectors and Fasteners
Origin -
Material Alloy Steel
Strength Grade 12.9
Surface Treatment Black Oxide & Zinc Plated
Thread Standard Metric ISO
Size Range M2 to M30
Hardness HRC 39-44
Package Contents Hex Nuts, Flat Washers, Spring Washers
Total Weight 5.8 kg
Certification ISO 9001 Certified
Recommended Use Heavy Machinery & Structural Assembly

5 reviews

A

Anonymous

Apr 09, 2026

Rating: 5/5

Strong and durable

No stripping issues even at high torque settings. Very satisfied.

A

Anonymous

Mar 16, 2026

Rating: 5/5

Excellent quality for the price

Used these for a structural project. The 12.9 grade held up well under torque.

A

Anonymous

Mar 10, 2026

Rating: 5/5

Perfect for procurement

Ordered for our factory maintenance team. Exactly what was specified.

A

Anonymous

Mar 06, 2026

Rating: 5/5

Complete assortment

Having all sizes from M2 to M30 in one kit saved us a lot of ordering time.

A

Anonymous

Feb 27, 2026

Rating: 4/5

Good but heavy packaging

The nuts are great quality. The box was a bit heavier than expected for shipping.

5 FAQ

Q: Do you sell individual sizes?

A: This listing is for the kit only. Please contact us for bulk single-size orders.

Q: Are mill test reports available?

A: Yes, we can provide material certification upon request for bulk orders.

Q: What is the thread pitch for M10?

A: Standard coarse pitch is 1.5mm. Fine pitch options are available separately.

Q: Can I get an invoice for business use?

A: Yes, VAT invoices are generated automatically at checkout for business accounts.

Q: Is this suitable for outdoor applications?

A: The zinc plated options offer moderate corrosion resistance. For harsh environments, consider stainless steel.

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