# DIN 7985 · M5 · kmax. — Sizes where a DIN fastener and its ISO equivalent are not interchangeable

For DIN 7985, size is M5; dimension that differs is kmax; iso standard is ISO 7045; din value is 3.8; iso value is 3.7, verified against its source on 2026-10-12.

- **DIN standard:** DIN 7985 _(verified: appears in the quote below)_
- **ISO standard:** ISO 7045 _(verified: appears in the quote below)_
- **Size:** M5 _(verified: appears in the quote below)_
- **Dimension that differs:** kmax. _(verified: appears in the quote below)_
- **DIN value:** 3.8 _(verified: appears in the quote below)_
- **ISO value:** 3.7 _(verified: appears in the quote below)_

## What the source says

**ISO standard, DIN value and ISO value:** The source prints these values inside the passage below but does not name them there. The passage shows where each one appears; what ties them to this record is the position on the page, not anything the passage says.

> Thread M1.6 M2 M2.5 M3 M3.5 M4 M5 M6 M8 M10 ISO 7045 3.2 4 5 5.6 7 8 9.5 12 16 20 dk max. DIN 7985 3.2 4 5 6 7 8 10 12 16 20 ISO 7045 1.3 1.6 2.1 2.4 2.6 3.1 3.7 4.6 6 7.5 kmax. DIN 7985 1.3 1.6 2 2.4 2.7 3.1 3.8 4.6 6 7.5

## Source

- https://www.wurthindustry.ca/media/downloads/wic_pdfs/Fasteners_DIN-EN-ISO_Standards.pdf

Last verified: 2026-10-12. Review by: 2029-10-11.
Part of [Sizes where a DIN fastener and its ISO equivalent are not interchangeable](https://referencesource.org/fastener-standard-interchangeability-exceptions/).