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Flat Washer: Steel, Black Oxide, Case Hardened Material Grade, For M20 Screw Size, 21 mm ID, 35 mm OD, 10 PK

Item # 516R019

$9.07 Pack of 10

Product Specs

Finish: Black Oxide
Material: Steel
Material Grade: Case Hardened
For Screw Size: M20
ID: 21 mm
OD: 35 mm
Thickness: 3.5 mm
Pack Qty: 10
System of Measurement: Metric
Shape: Round
For Use With: Jig Fixture Setup; Die
RoHS Compliant: No
Rockwell Hardness: C40
Type: General Purpose

Compliance and Restrictions

Country Of Origin

  • USA

About This Product

These Flat Washers are constructed of steel, which is a magnetic material that provides strength for everyday fastening applications. They have a finish that is constructed of black oxide, which provides mild corrosion resistance and a black finish on a material. They also have a case hardened material grade and are used with a screw size of M20. They have a 21 mm inside diameter and an OD of 35 mm. They also have a 3.500 mm thickness. Pack of 10.

About Flat Washers

The most common washer style, flat washers install between the fastened material's surface and a nut or bolt head to help distribute the load or reduce friction.