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.
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
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. Depending on application and environment, there are specific attributes that must be considered when selecting the correct component.
Material
• Brass
• Ceramic
• Steel
• Stainless Steel (304 and 316 grades)
Finish
• Bright zinc plated

...
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Description Price For Screw/Bolt Size Material Inside Diameter Outside Diameter Stainless Steel Type Thickness Finish
RS Stock No. 479-5768
BrandRS PRO
HK$11.04
Each (In a Pack of 10)
units
- - - - - - -
RS Stock No. 797-6364
BrandRS PRO
HK$103.32
1 Bag of 100
Bag(s)
M10 (Form A) Stainless Steel 10.5mm 20mm A4 316 2mm Plain
RS Stock No. 696-8858
Mfr. Part No.016440
HK$5.40
Each
units
- - - - - - -
RS Stock No. 293-173
BrandRS PRO
HK$304.83
1 Bag of 250
Bag(s)
M4 Copper 4.3mm 7.7 → 7.9mm - 0.8mm Plain
RS Stock No. 223-7406
BrandRS PRO
HK$74.82
Each
units
M5 Ceramic 5.5mm 10mm - 1.1mm Plain
RS Stock No. 248-4624
BrandRS PRO
HK$191.39
1 Bag of 25
Bag(s)
M20 (Form B) Stainless Steel 21mm 37mm A4 316 2mm Plain
RS Stock No. 293-189
BrandRS PRO
HK$301.84
1 Bag of 250
Bag(s)
M5 Copper 5.3mm 10mm - 0.8mm Plain
RS Stock No. 122-4382
BrandRS PRO
HK$78.36
1 Bag of 100
Bag(s)
M12 (Form C) Steel 13mm 28mm - 2.5mm Bright Zinc Plated
RS Stock No. 797-6068
BrandRS PRO
HK$59.21
1 Bag of 100
Bag(s)
M8 (Form A) Stainless Steel 8.4mm 16mm A2 304 1.6mm Plain
RS Stock No. 276-926
BrandRS PRO
HK$87.07
1 Bag of 50
Bag(s)
M16 Steel 17mm 30mm - 3mm Bright Zinc Plated
RS Stock No. 223-7412
BrandRS PRO
HK$81.11
Each
units
M6 Ceramic 6.7mm 12.5mm - 1.8mm Plain
RS Stock No. 122-4387
BrandRS PRO
HK$13.35
1 Bag of 100
Bag(s)
M6 (Form B) Steel 6.4mm 12.5mm - 0.9mm Bright Zinc Plated
RS Stock No. 179-5723
BrandRS PRO
HK$351.27
1 Bag of 250
Bag(s)
M1.4 Stainless Steel 1.5mm 3mm A2 304 0.3mm -
RS Stock No. 483-2659
BrandRS PRO
HK$473.50
1 Bag of 100
Bag(s)
M12 Brass 13mm 24mm - 2.5mm Plain
RS Stock No. 483-0681
BrandRS PRO
HK$187.84
1 Bag of 250
Bag(s)
0BA Brass 6.50mm 12.7mm - 1.01mm Nickel Plated
RS Stock No. 797-6070
BrandRS PRO
HK$102.16
1 Bag of 100
Bag(s)
M12 (Form A) Stainless Steel 13mm 24mm A2 304 2.5mm Plain
RS Stock No. 483-0653
BrandRS PRO
HK$41.84
1 Bag of 250
Bag(s)
M4 Brass 4.3mm 9mm - 0.8mm Nickel Plated
RS Stock No. 293-218
BrandRS PRO
HK$307.64
1 Bag of 100
Bag(s)
M10 Copper 10.5mm 13.7mm - 1.25mm Plain
RS Stock No. 122-4378
BrandRS PRO
HK$15.67
1 Bag of 100
Bag(s)
M5 (Form C) Steel 5.3mm 12.5mm - 1mm Bright Zinc Plated
RS Stock No. 797-6361
BrandRS PRO
HK$174.14
1 Bag of 50
Bag(s)
M16 (Form A) Stainless Steel 17mm 30mm A4 316 3mm Plain
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