Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Washers
Origin	-
Material	Carbon Steel
Surface Finish	Black Oxide
Standard	GB858
Thread Sizes	M10, M12, M150
Type	Six-Claw Locking Washer
Shape	Round with Sun Claw Design
Function	Anti-loosening and Retention
Hardness	High Tensile Strength
Application	Heavy Machinery and Automotive
Package Content	Assorted Kit (50 Pieces)

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

Excellent grip for heavy vibration areas

Used these on my tractor engine mounts. The six-claw design really bites into the metal and prevents loosening under high vibration. Very satisfied with the quality.

Anonymous

Mar 27, 2026

Rating: 5/5

Perfect fit for GB858 specs

Needed specific retainers for a restoration project. These matched the GB858 standard perfectly. The M12 size fit my bolts without any forcing.

Anonymous

Mar 24, 2026

Rating: 4/5

Good value but coating varies slightly

Overall a great product for the price. The black oxide finish is mostly consistent, though a few pieces had slight variations. Functionality is top-notch though.

Anonymous

Mar 21, 2026

Rating: 4/5

Works as advertised

Solid carbon steel construction. They require a bit more torque to install due to the locking mechanism, but that is expected. No issues so far after three months.

Anonymous

Mar 09, 2026

Rating: 5/5

Sturdy and reliable

Bought these for industrial shelving assembly. They are much sturdier than standard lock washers. The claws provide extra security that gives me peace of mind.

Anonymous

Mar 06, 2026

Rating: 5/5

Great for automotive repairs

My mechanic recommended these specific washers for suspension work. They hold tight and the black finish looks professional. Will definitely buy again.

5 FAQ

Q: Do you sell these in bulk quantities for manufacturing?

A: Yes, we offer bulk pricing for large orders. Please contact our sales department directly through the 'Contact Seller' button for a custom quote.

Q: Can these be reused after removal?

A: While they can be physically removed, we recommend replacing them after each use. The six-claw teeth may deform slightly upon removal, reducing their locking effectiveness.

Q: What is the hardness rating of the carbon steel used?

A: These washers are heat-treated to ensure high tensile strength suitable for heavy-duty applications, typically ranging between 35-45 HRC depending on the specific batch.

Q: Are these washers compatible with metric bolts only?

A: Yes, these washers are designed specifically for metric thread sizes including M10, M12, and others listed in the product specifications.

Q: Is the black coating resistant to rust outdoors?

A: The black oxide finish provides moderate corrosion resistance. For harsh outdoor or marine environments, we suggest applying an additional layer of oil or grease.

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