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Washers · GB/T 97.1 / ISO 7089

M14 General Flat Washer Dimensions & Specifications

M14 General Flat Washer Dimensions & Specifications reference image

M14 General Flat Washer (GB/T 97.1 / ISO 7089) are specified by thread size, length and head dimensions. The M14 row from the standard is reproduced below, followed by the drill sizes, spanner size and torque values used when installing this size.

M14 Dimensional Row (GB/T 97.1 / ISO 7089)

For bolt sizeInner diameter d1 (mm)Outer diameter d2 (mm)Thickness t (mm)Reference standard
M1415.028.02.5ISO 7089 / GB/T 97.1

Spanner & Drive for M14 General Flat Washer — GB/T 97.1 / ISO 7089 (Series 087)

Drive geometry for M14 General Flat Washer — GB/T 97.1 / ISO 7089 (Series 087) is given by the row above; match the tool to the listed values.

Common Applications for M14 General Flat Washer — GB/T 97.1 / ISO 7089 (Series 087)

M14 General Flat Washer — GB/T 97.1 / ISO 7089 (Series 087) are commonly specified for medium-duty structural joints.

Mating Parts for M14

A M14 flat washer pairs with a M14 bolt/screw and matching M14 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 97.1 / ISO 7089)

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 is the coarse-thread pitch of M14 for General Flat Washer — GB/T 97.1 / ISO 7089 (Series 087)?

For M14 the standard coarse pitch is 2 mm — this is the value used for General Flat Washer — GB/T 97.1 / ISO 7089 (Series 087).

What clearance and tapping drill suit M14?

Use a 15.5 mm clearance hole (ISO 273 medium) for through-fixing, or a 12 mm tapping drill for a coarse M14 thread.

Which washer dimensions matter most for M14?

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.

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.