Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	Alloy Steel
Strength Grade	12.9
Surface Finish	Black Oxide
Standard	GB93
Sizes Included	M3, M4, M5, M6, M8
Hardness	39-44 HRC
Tensile Strength	1220 MPa
Package Count	100 Pieces
Thread Type	Metric Coarse
Net Weight	500 Grams

5 reviews

Anonymous

Apr 14, 2026

Rating: 5/5

Great Quality

Very strong washers. No deformation under torque.

Anonymous

Apr 07, 2026

Rating: 5/5

Quick Ship

Arrived fast. Product matches description.

Anonymous

Apr 04, 2026

Rating: 5/5

Perfect Fit

Matched my M5 screws exactly. Happy with purchase.

Anonymous

Mar 21, 2026

Rating: 4/5

Good Value

Solid washers. Packaging could be sturdier.

Anonymous

Jan 25, 2026

Rating: 5/5

Reliable

Using for bike assembly. Holds well against vibration.

5 FAQ

Q: Are these reusable?

A: Spring washers are generally single-use for critical apps.

Q: Can I get M10 size?

A: Currently we stock up to M8 for this kit.

Q: Are these hardened?

A: Yes, they are hardened to 12.9 grade specifications.

Q: Is coating durable?

A: Black oxide is durable for general mechanical use.

Q: Do you ship internationally?

A: Yes, we ship to most countries.

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