Plain Washers

What is it?

A plain washer, also known as a flat washer is a thin ring of material with a hole in the centre and is an essential part of any fastener assembly. These washers help prevent wear and distortion of installation surfaces over time whilst reducing heat and friction during the tightening process.

What does it do?

A plain washer is used with a threaded fastener such as a screw or bolt. Washers are primarily used for the following;

  • Distributing the load of a threaded fastener for example, screw or nut
  • Preventing damage to the surface it is being fixed to during tightening
  • Provides a smooth surface for the nut or bolt to bear on to
  • Reduce vibration
  • Spacer

Applications

Plain washers are utilised whenever a fastener such as a nut or bolt is used. Some of the more common applications would be;

  • Furniture assembly
  • White goods, for example, washing machines
  • Unistrut and support rail systems
  • Steel structures
  • Bridges

Types

Flat washers are available in different materials, finishes and thicknesses from 0.3 mm to 5 mm. Washers are also available with various inside diameters (1.5 mm to 22 mm) and outside diameters (3 mm to 60 mm). Depending on application and environment, there are specific attributes that must be considered when selecting the correct component. For example stainless steel offers good corrosion resistance making it suitable for outdoor applications.

Material

  • Brass Washers
  • Ceramic Washers
  • Steel Washers
  • Stainless Steel Washers (A2 304 and A4 316 grades)

Finish

  • Bright zinc plated
  • Nickel plated
  • Zinc Plated
  • Chrome Plated

...
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Viewing 1 - 20 of 114 products
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Description Price For Screw/Bolt Size Material Inside Diameter Outside Diameter Stainless Steel Type Thickness Finish
RS Stock No. 189-620
BrandRS PRO
£3.50
1 Bag of 100
Bag(s)
M3 (Form A) Stainless Steel 3.2mm 7mm A4 316 0.5mm Plain
RS Stock No. 189-658
BrandRS PRO
£4.44
1 Bag of 100
Bag(s)
M6 (Form A) Stainless Steel 6.4mm 12mm A4 316 1.6mm Plain
RS Stock No. 525-925
BrandRS PRO
£2.02
1 Bag of 250
Bag(s)
M4 Steel 4.3mm 9mm - 0.8mm Bright Zinc Plated
RS Stock No. 525-931
BrandRS PRO
£1.92
1 Bag of 250
Bag(s)
M5 Steel 5.3mm 10mm - 1mm Bright Zinc Plated
RS Stock No. 189-636
BrandRS PRO
£3.75
1 Bag of 100
Bag(s)
M4 (Form A) Stainless Steel 4.3mm 9mm A4 316 0.8mm Plain
RS Stock No. 189-664
BrandRS PRO
£5.00
1 Bag of 50
Bag(s)
M6 Stainless Steel 8.4mm 17mm A4 316 1mm Plain
RS Stock No. 525-947
BrandRS PRO
£3.23
1 Bag of 250
Bag(s)
M6 Steel 6.4mm 12.5mm - 1.6mm Bright Zinc Plated
RS Stock No. 560-338
BrandRS PRO
£1.11
1 Bag of 250
Bag(s)
M3 Steel 3.2mm 7mm - 0.5mm Zinc Plated
RS Stock No. 527-634
BrandRS PRO
£2.41
1 Bag of 100
Bag(s)
M8 Steel 8.4mm 16mm - 1.6mm Bright Zinc Plated
RS Stock No. 530-797
BrandRS PRO
£3.84
1 Bag of 100
Bag(s)
M8 (Form B) Stainless Steel 8.4mm 17mm A2 304 1mm Plain
RS Stock No. 189-642
BrandRS PRO
£4.04
1 Bag of 100
Bag(s)
M5 (Form A) Stainless Steel 5.3mm 10mm A4 316 1mm Plain
RS Stock No. 527-640
BrandRS PRO
£4.65
1 Bag of 100
Bag(s)
M10 Steel 10.5mm 20mm - 2mm Bright Zinc Plated
RS Stock No. 189-670
BrandRS PRO
£7.05
1 Bag of 50
Bag(s)
M10 (Form B) Stainless Steel 10.5mm 21mm A4 316 1.25mm Plain
RS Stock No. 797-6257
BrandRS PRO
£4.49
1 Bag of 100
Bag(s)
M6 Stainless Steel 6.4mm 18mm A2 304 1.6mm Plain
RS Stock No. 527-369
BrandRS PRO
£4.55
1 Bag of 250
Bag(s)
M3 (Form A) Stainless Steel 3.2mm 7mm A2 304 0.5mm Plain
RS Stock No. 527-381
BrandRS PRO
£5.56
1 Bag of 250
Bag(s)
M4 (Form A) Stainless Steel 4.3mm 9mm A2 304 0.8mm Plain
RS Stock No. 483-2621
BrandRS PRO
£20.20
1 Bag of 250
Bag(s)
M6 Brass 6.4mm 12mm - 1.6mm Plain
RS Stock No. 527-404
BrandRS PRO
£6.06
1 Bag of 250
Bag(s)
M6 (Form A) Stainless Steel 6.4mm 12mm A2 304 1.6mm Plain
RS Stock No. 527-397
BrandRS PRO
£5.35
1 Bag of 250
Bag(s)
M5 (Form A) Stainless Steel 5.3mm 10mm A2 304 1mm Plain
RS Stock No. 275-715
BrandRS PRO
£9.80
1 Bag of 50
Bag(s)
M16 (Form B) Stainless Steel 17mm 30mm A2 304 2mm Plain
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