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Home / Connectors and Fasteners / National Standard Blue-White Zinc Plated Oversized Flat Washers M4/5/6/8/10/12/14/16/18/20/24/27/30/33/36
Connectors and Fasteners

Attributes

Brand -
Category Industrial Small Parts / Connectors and Fasteners
Origin -
Material Carbon Steel
Surface Finish Zinc Plated
Metric Size Range M4 to M36
Industry Standard DIN 9021 / ISO 7093
Washer Type Oversized Flat
Hardness Rating 140 HV Minimum
Thickness Series Standard Series
Plating Color Blue/White
Unit Weight Varies by Size
Primary Use Structural Joining

5 reviews

A

Anonymous

Apr 20, 2026

Rating: 5/5

Exactly as Described

Dimensions match the spec sheet. Zinc coating looks even and durable.

A

Anonymous

Mar 20, 2026

Rating: 4/5

Solid Value

Good price for the quantity. Would recommend for general construction use.

A

Anonymous

Feb 22, 2026

Rating: 5/5

Perfect for Steel Frames

Used these on a recent project. The oversized diameter helped cover larger holes perfectly.

A

Anonymous

Feb 11, 2026

Rating: 4/5

Good Quality

Most washers were perfect. Found one or two with slight plating imperfections but usable.

A

Anonymous

Jan 27, 2026

Rating: 5/5

Fast Shipping

Needed these urgently for a repair. Arrived quickly and well packaged.

5 FAQ

Q: Can these be used outdoors?

A: Zinc plating offers moderate corrosion resistance. For harsh outdoor environments, stainless steel is recommended.

Q: What is the outer diameter for M10 size?

A: For M10 oversized flat washers, the outer diameter is approximately 28mm.

Q: Are these washers stainless steel?

A: No, these are made from carbon steel with a zinc plating finish.

Q: Do you sell imperial sizes as well?

A: This specific listing is for metric sizes only. Please check our imperial section for inch sizes.

Q: Is there a bulk discount available?

A: Yes, discounts apply automatically at checkout for orders exceeding 5 kilograms.

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