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M4 Flat Washers (DIN 9021) - Stainless Steel (A2)

Accu Product Code (APC): HPW-M4-V2-A2
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M4 Flat Washers (DIN 9021) - Stainless Steel (A2) Technical Specification

Technical Specification

External Diameter (OD)
12mm
External Diameter (OD) Tolerance
+0.43/-0mm
Finish
Natural
For Use With Thread Size
M4 (4mm)
Internal Diameter (ID)
4.3mm
Internal Diameter (ID) Tolerance
+0.18/-0mm
Manufacturing Standard
DIN 9021
Material
Stainless Steel (A2)
Material Specification
Stainless Steel (A2)
Metric or Imperial?
Metric
Thickness (T)
1mm
Thickness (T) Tolerance
+0.2/-0mm

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M4 Flat Washers (DIN 9021) - Stainless Steel (A2) Description

The M4 Flat Washers (DIN 9021) - Stainless Steel (A2) has the following features:

  • DIN 9021 Manufacturing Standard
  • Stainless Steel (A2) Material
  • Stainless Steel (A2) Material Specification
  • +0.2/-0mm Thickness (T) Tolerance
  • M4 (4mm) For Use With Thread Size
  • Natural Finish
  • Metric Metric or Imperial?
  • +0.43/-0mm External Diameter (OD) Tolerance
  • +0.18/-0mm Internal Diameter (ID) Tolerance
  • 12mm External Diameter (OD)
  • 1mm Thickness (T)
  • 4.3mm Internal Diameter (ID)

Discover more about the Metric Flat Washers range.

Flat Washers, one of Accu's Stainless Steel Washer & Spacers range, are designed primarily to enhance the load-bearing capabilities of a threaded fastener, and are compatible with a wide range of Precision Screws. Flat Washers are versatile components with a variety of uses, including spacing, pre-load indication, and wear-protection.

Flat Washers are available in several variants with varying diameters and thicknesses. The most commonly used washers are forms A, B and C, with more specialised variants such as Penny Washers also available. Flat washer variants range from those with small external diameters and thicknesses, to very large washers with large external diameters.

Where a flat surface is not required, components such as Countersunk Washers or Spring Washers may be preferable.

Materials

Accu's standard range of Flat Washers is manufactured from A2, A4 and Bumax Stainless Steel, with Chemical Matte Blackening available. All Stainless Steel Washers are resistant to tarnishing and corrosion, but A4 Stainless Steel is specifically designed for use in marine environments.

Flat Washers can also be manufactured from a variety of specialist materials, including Aluminium, Brass, Phosphor Bronze, Nylon, PEEK, Polycetal and Titanium. Fibre and Rubber Flat Washers are intended to be pliable for sealing purposes.

Metric Flat Washers

Metric Flat Washers are available in sizes ranging from M1 to M56. This category includes only metric flat washers – Imperial Flat Washers in imperial sizes are available separately.

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Certifications
Certificate Of Conformity:
Supplied With Your Order
3 Year Warranty:
Supplied With Your Order
Shipping Information
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Weight (100 items):
0.077kg
Component History
Product First Available:
Monday, June 6, 2016
Stock Last Updated:
02:29 AMSunday, May 22, 2022
Specification Last Updated:
Sunday, May 22, 2022
Barcodes
APC (Accu Product Code):
HPW-M4-V2-A2
EAN13 (International Article No.):
5057196522774
ASIN (Amazon Stock Identification No.):
ASIN not defined.
Product Certifications
Certificate of Conformity Included
Certificate of Conformity Included
RoHS Certified
RoHS Certified
REACH Certified
REACH Certified
ISO9001
ISO9001
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