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Washers · ISO 7980 / DIN 127

M8 Spring Lock Washers

On the bench specifying M8 Spring Lock Washers? This page gives the controlling dimensions for the M8 size of Spring Lock Washers (to ISO 7980 / DIN 127).

M8 Dimensional Row (ISO 7980 / DIN 127)

For bolt sizeInner diameter d1 min (mm)Outer diameter d2 max (mm)Width b (mm)Thickness s (mm)Reference standard
M88.114.85.02.0ISO 7980 / DIN 127

Spanner & Drive for M8 Spring Lock Washers

Drive geometry for M8 Spring Lock Washers is given by the row above; match the tool to the listed values.

Common Applications for M8 Spring Lock Washers

M8 Spring Lock Washers are commonly specified for general-purpose load-spreading and locking under machine bolts.

Mating Parts for M8

A M8 flat washer pairs with a M8 bolt/screw and matching M8 nut.

When to Step Up or Down from M8

When the joint preload approaches the proof load of M8 class 8.8, step up to M10 class 8.8 (or move to M8 class 10.9). When the joint is over-specified, M6 often saves weight and cost without losing the safety margin.

Technical Drawing

Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the size will snap the other fields to that size's standard values; you can then override any individual value.

Sends the selected values to the quote form below.

Request a Quote

Adjust the parameters in the drawing above and click "Request this configuration" to send the exact specification straight to this form.

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Specification
Business Information

Dimensions & Specifications (ISO 7980 / DIN 127)

For bolt sizeInner diameter d1 min (mm)Outer diameter d2 max (mm)Width b (mm)Thickness s (mm)Reference standard
M22.14.41.60.5ISO 7980 / DIN 127
M2.52.65.12.00.6ISO 7980 / DIN 127
M33.16.22.00.8ISO 7980 / DIN 127
M3.53.67.02.50.8ISO 7980 / DIN 127
M44.17.62.51.0ISO 7980 / DIN 127
M55.19.23.01.2ISO 7980 / DIN 127
M66.111.84.01.6ISO 7980 / DIN 127
M77.113.14.01.6ISO 7980 / DIN 127
M88.114.85.02.0ISO 7980 / DIN 127
M1010.218.16.02.2ISO 7980 / DIN 127
M1212.221.17.02.5ISO 7980 / DIN 127
M1414.224.18.03.0ISO 7980 / DIN 127
M1616.227.49.03.5ISO 7980 / DIN 127
M1818.229.49.03.5ISO 7980 / DIN 127
M2020.233.610.04.0ISO 7980 / DIN 127
M2222.535.911.04.0ISO 7980 / DIN 127
M2424.540.112.05.0ISO 7980 / DIN 127
M2727.544.812.05.0ISO 7980 / DIN 127
M3030.550.014.06.0ISO 7980 / DIN 127
M3636.560.016.07.0ISO 7980 / DIN 127

Frequently Asked Questions

What clearance and tapping drill suit M8?

Use a 9 mm clearance hole (ISO 273 medium) for through-fixing, or a 6.8 mm tapping drill for a coarse M8 thread.

Which washer dimensions matter most for M8?

For a flat washer, the outside diameter (the bearing surface) and the thickness control how the load is spread under the head and how much elastic preload is preserved. The inside diameter must clear the bolt body but not be so large that the head bears mostly on the washer's outer rim.

What is the coarse-thread pitch of M8 for Spring Lock Washers?

For M8 the standard coarse pitch is 1.25 mm — this is the value used for Spring Lock Washers.

How do I request a quotation?

Use the technical drawing on this page to pick the exact configuration, then submit it with the quote form. We respond within one business day.