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Washers · GB/T 852

M3 Square Channel-Steel Washer Dimensions & Specifications

M3 Square Channel-Steel Washer Dimensions & Specifications reference image

This page covers M3 Square Channel-Steel Washer to GB/T 852: the full dimensional row, hole and tool sizes, proof-load data and typical applications. All values are taken from the governing standards (GB/T 852 together with ISO 273, ISO 724 and ISO 898-1 where applicable).

M3 Dimensional Row (GB/T 852)

For bolt sizeInner diameter d1 (mm)Outer diameter d2 (mm)Thickness t (mm)Reference standard
M33.27.00.5ISO 7089 / GB/T 97.1

Spanner & Drive for M3 Square Channel-Steel Washer — GB/T 852 (Series 083)

Drive geometry for M3 Square Channel-Steel Washer — GB/T 852 (Series 083) is given by the row above; match the tool to the listed values.

Common Applications for M3 Square Channel-Steel Washer — GB/T 852 (Series 083)

M3 Square Channel-Steel Washer — GB/T 852 (Series 083) are commonly specified for small electronics hardware and precision assemblies.

Installation Tips for M3 Square Channel-Steel Washer — GB/T 852 (Series 083)

  • At M3 the joint is sensitive to over-torque — use a torque-limiting driver and check the head doesn't bury into a softer counterpart.

Mating Parts for M3

A M3 flat washer pairs with a M3 bolt/screw and matching M3 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.

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 (GB/T 852)

For bolt sizeInner diameter d1 (mm)Outer diameter d2 (mm)Thickness t (mm)Reference standard
M33.27.00.5ISO 7089 / GB/T 97.1
M44.39.00.8ISO 7089 / GB/T 97.1
M55.310.01.0ISO 7089 / GB/T 97.1
M66.412.01.6ISO 7089 / GB/T 97.1
M88.416.01.6ISO 7089 / GB/T 97.1
M1010.520.02.0ISO 7089 / GB/T 97.1
M1213.024.02.5ISO 7089 / GB/T 97.1
M1415.028.02.5ISO 7089 / GB/T 97.1
M1617.030.03.0ISO 7089 / GB/T 97.1
M1819.034.03.0ISO 7089 / GB/T 97.1
M2021.037.03.0ISO 7089 / GB/T 97.1
M2425.044.04.0ISO 7089 / GB/T 97.1
M3031.056.04.0ISO 7089 / GB/T 97.1
M3637.066.05.0ISO 7089 / GB/T 97.1

Frequently Asked Questions

What's the typical proof load behavior of M3 class 8.8?

Micro-thread joints are sensitive to plastic deformation in the first turn under load — use a torque-limiting driver and check the bearing surface deformation on softer mating materials.

Which washer dimensions matter most for M3?

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 M3 for Square Channel-Steel Washer — GB/T 852 (Series 083)?

For M3 the standard coarse pitch is 0.5 mm — this is the value used for Square Channel-Steel Washer — GB/T 852 (Series 083).

What clearance and tapping drill suit M3?

Use a 3.4 mm clearance hole (ISO 273 medium) for through-fixing, or a 2.5 mm tapping drill for a coarse M3 thread.

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.