Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Washers
Origin	-
Material	Grade 12.9 Alloy Steel & 304 Stainless Steel
Standard	GB93 / DIN 127
Surface Finish	Black Oxide (Steel) / Plain (Stainless)
Included Sizes	M5, M6, M8, M10, M12
Hardness Rating	HRC 44-52 (Grade 12.9)
Package Type	Compartmentalized Plastic Case
Total Piece Count	350 Pieces
Application	Automotive, Machinery, Structural Assembly
Corrosion Resistance	Moderate (Black) / High (304 SS)
Country of Origin	China

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

Best value kit

I've bought several washer kits before, but this one offers the best balance of quantity and quality. The compartment box is a nice touch for storage.

Anonymous

Mar 22, 2026

Rating: 5/5

High quality steel

You can tell these are genuine high-tensile washers. The black oxide coating is even, and the spring tension is consistent across all sizes. Highly recommended.

Anonymous

Mar 13, 2026

Rating: 4/5

Solid purchase

The 304 stainless options are great for outdoor projects where rust is a concern. The steel ones are very hard, so be careful not to strip them if over-torquing.

Anonymous

Mar 10, 2026

Rating: 4/5

Good variety pack

Great assortment for general workshop use. The plastic case is sturdy and keeps everything organized. Only wish there were slightly more M5 washers included.

Anonymous

Mar 08, 2026

Rating: 5/5

Perfect for automotive repairs

The Grade 12.9 washers are incredibly strong. I used the M8 and M10 sizes on my suspension setup, and they held up perfectly under high torque without deforming.

Anonymous

Mar 03, 2026

Rating: 5/5

Exactly as described

Needed specific GB93 standard washers for a machinery retrofit. These fit perfectly and meet the hardness requirements specified in our drawings.

5 FAQ

Q: What is the inner diameter tolerance for the M6 size?

A: The M6 spring washers follow standard GB93 tolerances, with an inner diameter typically ranging between 6.4mm and 6.6mm to ensure a proper fit.

Q: Does this kit include flat washers or just spring washers?

A: This assortment contains only GB93 standard spring lock washers. Flat washers are not included in this specific package.

Q: Is the storage case durable enough for job site transport?

A: Yes, the case is made from impact-resistant polypropylene with secure latches, making it suitable for transport in toolboxes or vehicles.

Q: Are the M12 washers suitable for high-vibration environments?

A: Yes, the Grade 12.9 spring washers are specifically designed to maintain tension and prevent loosening in high-vibration applications.

Q: Can the black oxide washers be used outdoors?

A: While the black oxide provides some protection, for prolonged outdoor exposure we recommend using the included 304 Stainless Steel washers to prevent rust.

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