Plain Washer, Normal Series, Product Grade C
ISO 7091 (Current)
- Material
- Stainless Steel, Carbon Steel
- Property Class
- 100 HV
- Finish
- Passivated, Plain, Zinc Plated, Hot Dip Galvanized and more
- Size range
- M5–M36
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Select sizes and quantities — 10 confirmed sizes to ISO 7091
Material
Grade
Stainless SteelCarbon Steel
Finish
| dNominal Diameter (mm) | d1Inner Diameter (mm) | d2Outer Diameter (mm) | hWasher Thickness (mm) | hThickness (max) (mm) | hThickness (min) (mm) | MOQ | Quantity and inquiry |
|---|---|---|---|---|---|---|---|
| M5 | 5.5 | 10 | 1 | 1.2 | 0.8 | 2000 | |
| M6 | 6.6 | 12 | 1.6 | 1.9 | 1.3 | 2000 | |
| M8 | 9 | 16 | 1.6 | 1.9 | 1.3 | 2000 | |
| M10 | 11 | 20 | 2 | 2.3 | 1.7 | 1200 | |
| M12 | 13.5 | 24 | 2.5 | 2.8 | 2.2 | 1000 | |
| M16 | 17.5 | 30 | 3 | 3.6 | 2.4 | 1000 | |
| M20 | 22 | 37 | 3 | 3.6 | 2.4 | 500 | |
| M24 | 26 | 44 | 4 | 4.6 | 3.4 | 500 | |
| M30 | 33 | 56 | 4 | 4.6 | 3.4 | 500 | |
| M36 | 39 | 66 | 5 | 6 | 4 | 500 |
Showing 10 of 10 sizes
dNominal Diameter (mm)M5
d1Inner Diameter (mm)5.5
d2Outer Diameter (mm)10
hWasher Thickness (mm)1
hThickness (max) (mm)1.2
hThickness (min) (mm)0.8
MOQ2000
M6 × 6.6 × 12 × 1.6 × 1.9 × 1.3 × 6.96 × 10.9
dNominal Diameter (mm)M6
d1Inner Diameter (mm)6.6
d2Outer Diameter (mm)12
hWasher Thickness (mm)1.6
hThickness (max) (mm)1.9
hThickness (min) (mm)1.3
MOQ2000
M8 × 9 × 16 × 1.6 × 1.9 × 1.3 × 9.36 × 14.9
dNominal Diameter (mm)M8
d1Inner Diameter (mm)9
d2Outer Diameter (mm)16
hWasher Thickness (mm)1.6
hThickness (max) (mm)1.9
hThickness (min) (mm)1.3
MOQ2000
M10 × 11 × 20 × 2 × 2.3 × 1.7 × 11.43 × 18.7
dNominal Diameter (mm)M10
d1Inner Diameter (mm)11
d2Outer Diameter (mm)20
hWasher Thickness (mm)2
hThickness (max) (mm)2.3
hThickness (min) (mm)1.7
MOQ1200
M12 × 13.5 × 24 × 2.5 × 2.8 × 2.2 × 13.93 × 22.7
dNominal Diameter (mm)M12
d1Inner Diameter (mm)13.5
d2Outer Diameter (mm)24
hWasher Thickness (mm)2.5
hThickness (max) (mm)2.8
hThickness (min) (mm)2.2
MOQ1000
M16 × 17.5 × 30 × 3 × 3.6 × 2.4 × 17.93 × 28.7
dNominal Diameter (mm)M16
d1Inner Diameter (mm)17.5
d2Outer Diameter (mm)30
hWasher Thickness (mm)3
hThickness (max) (mm)3.6
hThickness (min) (mm)2.4
MOQ1000
M20 × 22 × 37 × 3 × 3.6 × 2.4 × 22.52 × 35.4
dNominal Diameter (mm)M20
d1Inner Diameter (mm)22
d2Outer Diameter (mm)37
hWasher Thickness (mm)3
hThickness (max) (mm)3.6
hThickness (min) (mm)2.4
MOQ500
M24 × 26 × 44 × 4 × 4.6 × 3.4 × 26.52 × 42.4
dNominal Diameter (mm)M24
d1Inner Diameter (mm)26
d2Outer Diameter (mm)44
hWasher Thickness (mm)4
hThickness (max) (mm)4.6
hThickness (min) (mm)3.4
MOQ500
M30 × 33 × 56 × 4 × 4.6 × 3.4 × 33.62 × 54.1
dNominal Diameter (mm)M30
d1Inner Diameter (mm)33
d2Outer Diameter (mm)56
hWasher Thickness (mm)4
hThickness (max) (mm)4.6
hThickness (min) (mm)3.4
MOQ500
M36 × 39 × 66 × 5 × 6 × 4 × 40 × 64.1
dNominal Diameter (mm)M36
d1Inner Diameter (mm)39
d2Outer Diameter (mm)66
hWasher Thickness (mm)5
hThickness (max) (mm)6
hThickness (min) (mm)4
MOQ500
Product details
- Description
- Plain washer in normal series, product grade C, manufactured to ISO 7091. The washer has a flat annular shape with a central hole sized for metric bolts from M5 to M24. It is supplied in stainless steel or carbon steel with a grade of 100 HV. Available finishes include passivated, plain, zinc plated, hot dip galvanized, and Dacromet. For quotation, specify the required diameter, material, and finish.
- Features
- Flat annular shape with a central hole for metric bolts · Normal series dimensions per ISO 7091 · Available in diameters M5 to M24 · Supplied in stainless steel or carbon steel with finishes including passivated, plain, zinc plated, hot dip galvanized, and Dacromet
- Applications
- Spreading the clamping load over a larger bearing area, Protecting the surface under the bolt head or nut, Taking up clearance in oversized holes
Order assurance
Confirmed for the quoted product and order.Reports & inspection
Agreed in the quotation.
- EN 10204 3.1 material certificate
- Dimensional inspection report
- Certificate of conformity
- Mechanical test report
- Chemical analysis report
- Coating inspection report
- Batch and lot traceability
Packaging & delivery
Options we supply.
- Bulk carton packing
- Small boxes with outer cartons
- Palletized shipment
- Fumigation-free pallets
- Inner poly bags
- Buyer branding and labels
Product questions
What sizes of ISO 7091 washers do you supply?
Execution standard: ISO 7091. The confirmed specification table covers M5–M36 diameters. Use the specification table to select the exact variant required for quotation.
Which materials, grades and finishes can I order?
Material: Stainless Steel, Carbon Steel; Property class: 100 HV; Finish: Passivated, Plain, Zinc Plated, Hot Dip Galvanized, Dacromet. Availability should be confirmed against the selected specification and order quantity.
Where are these washers typically used?
Typical applications include Spreading the clamping load over a larger bearing area, Protecting the surface under the bolt head or nut, Taking up clearance in oversized holes. Final suitability depends on the selected material, grade, finish and operating conditions.







