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Washers · GB/T 93 / DIN 127B

M18 Spring Lock Washer Dimensions & Specifications

M18 Spring Lock Washer Dimensions & Specifications reference image

The M18 size of Spring Lock Washer is dimensioned by GB/T 93 / DIN 127B. The tables below give the dimensional row from the standard, the drill and spanner sizes that go with it, and the assembly torque per property class. The technical drawing on this page redraws to the exact values selected.

M18 Dimensional Row (GB/T 93 / DIN 127B)

For bolt sizeInner diameter d1 (mm)Outer diameter d2 (mm)Width b (mm)Thickness t (mm)Reference standard
M1818.229.45.04.5GB/T 93 / DIN 127B

Spanner & Drive for M18 Spring Lock Washer — GB/T 93 / DIN 127B (Series 080)

Drive geometry for M18 Spring Lock Washer — GB/T 93 / DIN 127B (Series 080) is given by the row above; match the tool to the listed values.

Common Applications for M18 Spring Lock Washer — GB/T 93 / DIN 127B (Series 080)

M18 Spring Lock Washer — GB/T 93 / DIN 127B (Series 080) are commonly specified for high-load load-spreading on structural joints.

Installation Tips for M18 Spring Lock Washer — GB/T 93 / DIN 127B (Series 080)

  • At M18 the stretch in the bolt becomes the controlling factor — for critical joints, use angle-controlled or stretch-controlled tightening instead of pure torque.

Mating Parts for M18

A M18 flat washer pairs with a M18 bolt/screw and matching M18 nut.

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.

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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 (GB/T 93 / DIN 127B)

For bolt sizeInner diameter d1 (mm)Outer diameter d2 (mm)Width b (mm)Thickness t (mm)Reference standard
M33.16.21.00.8GB/T 93 / DIN 127B
M44.17.61.21.0GB/T 93 / DIN 127B
M55.19.21.51.2GB/T 93 / DIN 127B
M66.111.82.01.6GB/T 93 / DIN 127B
M88.114.82.52.0GB/T 93 / DIN 127B
M1010.218.13.02.5GB/T 93 / DIN 127B
M1212.221.13.53.0GB/T 93 / DIN 127B
M1414.224.14.03.5GB/T 93 / DIN 127B
M1616.227.44.54.0GB/T 93 / DIN 127B
M1818.229.45.04.5GB/T 93 / DIN 127B
M2020.233.65.55.0GB/T 93 / DIN 127B
M2424.540.16.56.0GB/T 93 / DIN 127B
M3030.550.08.07.5GB/T 93 / DIN 127B

Frequently Asked Questions

Should M18 Spring Lock Washer — GB/T 93 / DIN 127B (Series 080) be tightened by torque or by angle?

For critical structural joints at M18, angle-controlled or stretch-controlled tightening is more repeatable than pure torque — the friction scatter at large diameters can dominate the torque signal.

What grip range is typical for M18 structural bolts?

Grip ranges are highly application-dependent at M18. As a guide, choose a length that gives at least 1× the thread diameter engagement in the nut plus 2–3 thread pitches projecting.

Which washer dimensions matter most for M18?

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 M18 for Spring Lock Washer — GB/T 93 / DIN 127B (Series 080)?

For M18 the standard coarse pitch is 2.5 mm — this is the value used for Spring Lock Washer — GB/T 93 / DIN 127B (Series 080).

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.