Overview

Metric spring washers - Type A

DIN 7980 

BS 4464  

Materials and Finishes  

Steel/Zinc & clear 

Stainless steel/Self colour

Note: Due to the fact that fastening applications differ greatly, the below information is for guidance only and is correct to the best of our knowledge. The customer must satisfy themselves with the performance of the fastener and validity of the data. TR Fastenings will not be held responsible for any failure that may occur from the use of this information.

Dimension data
For metric screwsd minD maxHs
M33.15.521
M3.53.66.021
M44.16.952.41.2
M55.18.553.21.5
M66.19.63.21.5
M88.212.7542
M1010.215.952.5
M1212.217.952.5
M1414.221.163
M1616.324.373.5
M18*18.326.473.5
M20*20.330.594.5
M22*22.432.794.5
M24*24.435.7105
M27*27.538.9105
M30*30.543.9126
M33*33.547.0126

* - Non preferred

Preferred range
Preferred Range
ThreadMaterial
M4ST  A2  A4
M5ST  A2  A4
M6ST  A2  A4
M8ST  A2  A4
M10ST  A2  A4
M12ST  A2  A4
M16ST  A2  A4
M20ST  A2  A4

ST - Steel, Zinc and Clear De - Em

A2 - A2 Stainless Steel, Self Colour

A4 - A4 Stainless Steel, Self colour

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