Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	Carbon Steel, 304 Stainless Steel
Standard	GB858
Surface Finish	Zinc Plated, Black Oxide, Plain
Hardness	35-45 HRC
Tooth Configuration	6 Teeth External
Thread Size	M4 to M20
Package Count	100 Pieces per Pack
Net Weight	500g
Usage	Automotive, Machinery, Electronics
Brand	FastenPro

5 reviews

Anonymous

Apr 07, 2026

Rating: 5/5

Highly Recommend

Bought the stainless version for outdoor use. No rust yet.

Anonymous

Mar 13, 2026

Rating: 5/5

Perfect Fit

These washers fit my round nuts perfectly. Very secure lock.

Anonymous

Feb 21, 2026

Rating: 4/5

Good Value

Quality is good but delivery took a bit longer than expected.

Anonymous

Jan 27, 2026

Rating: 5/5

Exactly as Described

The six-tooth design works great for vibration resistance.

Anonymous

Jan 26, 2026

Rating: 5/5

Strong Material

The carbon steel is very durable. No stripping during installation.

5 FAQ

Q: Can I return opened packages?

A: Yes, returns are accepted within 30 days if unused.

Q: Do you offer bulk pricing for 1000 units?

A: Please contact our sales team for bulk order discounts.

Q: Which material is better for outdoor use?

A: We recommend 304 Stainless Steel for corrosion resistance.

Q: Are these compatible with metric round nuts?

A: Yes, these follow the GB858 metric standard.

Q: What is the hardness rating?

A: The hardness is typically between 35-45 HRC.

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