Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Washers
Origin	-
Material	65 Mn Steel / 70# Steel
Hardness Grade	Grade 8.8 Hardened
Standard	GB93
Surface Finish	Blackened (Oxide Coating)
Type	Spring Lock Washer
Function	Elastic Locking & Vibration Resistance
Brand	Jinguying
Application	Machinery, Automotive, and Structural Assembly
Corrosion Resistance	Moderate (Suitable for indoor use)
Package Content	Bulk Pack of Assorted Sizes

6 reviews

Anonymous

Mar 31, 2026

Rating: 4/5

Great for automotive projects

Used these on my car's suspension components. They seem very robust. Only giving 4 stars because the packaging was a bit messy, but the product itself is top-notch.

Anonymous

Mar 23, 2026

Rating: 5/5

Perfect for heavy machinery repairs

These washers are exactly what I needed for my lathe maintenance. The black finish is consistent, and the steel feels very hard and durable. They hold tension well under vibration.

Anonymous

Mar 13, 2026

Rating: 5/5

Standard GB93 compliance

As an engineer, I checked the dimensions against the GB93 standard, and they are spot on. Highly recommended for professional applications requiring precise tolerances.

Anonymous

Mar 12, 2026

Rating: 5/5

Reliable and strong

No complaints here. The hardened steel handles high torque without stripping or deforming. Will definitely order again for my workshop stock.

Anonymous

Mar 05, 2026

Rating: 5/5

Excellent spring tension

I've used many brands of lock washers, and these Jinguying ones have excellent elasticity. They don't flatten out easily, ensuring a secure lock on my bolts.

Anonymous

Mar 03, 2026

Rating: 4/5

Good quality, slight oil residue

The washers are high quality and fit perfectly. They arrived with a slight oily film which is common for blackened steel, but easy to wipe off before installation. Great value.

5 FAQ

Q: Can these be reused after removal?

A: While spring lock washers can physically be removed and reinstalled, it is generally best practice to replace them in critical applications. Repeated compression may reduce their elastic properties and locking effectiveness over time.

Q: What is the hardness rating in HRC for Grade 8.8?

A: Grade 8.8 hardened spring washers typically have a hardness range between 38 and 45 HRC, providing a good balance of strength and elasticity for locking applications.

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

A: These washers feature a blackened oxide coating which offers moderate corrosion resistance. However, for prolonged outdoor exposure to rain or humidity, we recommend applying an additional layer of grease or using stainless steel variants to prevent rust.

Q: Is the material carbon steel or alloy steel?

A: These washers are manufactured from 65 Mn (Manganese) steel or 70# high-carbon steel, which are types of high-quality carbon spring steels known for their durability and fatigue resistance.

Q: Do you sell these in metric sizes like M6 and M8 specifically?

A: Yes, our Jinguying GB93 washers are available in standard metric sizes including M6, M8, M10, and larger. Please select your specific size requirement from the dropdown menu on the product page.

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