Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Washers
Origin	-
Material	65Mn Carbon Steel
Surface Treatment	Nickel Plated
Standard	GB93 National Standard
Type	Spring Lock Washer
Available Sizes	M3, M4, M5, M6, M8, M10, M12-M30
Hardness	HRC 42-47
Application	General Machinery and Automotive Assembly
Package Weight	Varies by quantity and size selected
Corrosion Resistance	Moderate (Indoor/Dry Environments)
Country of Origin	China

6 reviews

Anonymous

Mar 26, 2026

Rating: 4/5

Solid industrial grade

These are heavy duty. The 65Mn steel holds up well under vibration. Took off one star because the packaging was a bit difficult to open without spilling.

Anonymous

Mar 24, 2026

Rating: 4/5

Good value bulk pack

Bought a mixed bag for our workshop. Most sizes are spot on. One or two M6 washers seemed slightly thinner than expected, but overall very usable.

Anonymous

Mar 17, 2026

Rating: 5/5

Perfect fit for my machinery repair

Ordered the M8 size for a conveyor belt repair. The nickel plating looks clean and they fit snugly under the bolt heads. Great quality for the price.

Anonymous

Mar 15, 2026

Rating: 5/5

Fast shipping and well packaged

Needed M10 washers urgently for a project. They arrived in two days, neatly bagged with clear labeling. No rust or damage.

Anonymous

Mar 08, 2026

Rating: 5/5

Exactly what I needed

Using these for automotive suspension work. The lock feature works great to prevent loosening. Highly recommend for DIY mechanics.

Anonymous

Mar 05, 2026

Rating: 5/5

Standard compliance confirmed

As an engineer, I checked these against the GB93 specs. Dimensions and spring tension are within tolerance. Will order again for production runs.

5 FAQ

Q: Do you sell these in individual sizes or only as a kit?

A: You can purchase them in specific sizes (e.g., only M6) or as a mixed assortment kit. Please select your preference from the dropdown menu on the product page.

Q: Are these washers suitable for outdoor use in rainy conditions?

A: While the nickel plating offers some protection, these are best suited for indoor or dry environments. For prolonged outdoor exposure, we recommend stainless steel variants.

Q: Is there a certificate of conformity available for batch testing?

A: Yes, for bulk orders over 5kg, we can provide a mill test certificate upon request. Please contact our sales team after placing your order.

Q: Can these be used with metric bolts from European manufacturers?

A: Absolutely. Since these adhere to the GB93 standard which aligns closely with ISO 7092, they are fully compatible with standard metric bolts used in European machinery.

Q: What is the hardness rating of the 65Mn material used?

A: The 65Mn carbon steel used in these washers typically has a hardness range of HRC 42-47 after heat treatment, ensuring good elasticity and durability.

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