# 2d 45 35 37 — File format magic numbers

For 2d 45 35 37, offset is 0; extension is e57; format is ASTM E57 3D file format, verified against its source on 2026-08-03.

- **Hex signature:** 2d 45 35 37
- **Offset:** 0
- **Extension:** e57
- **Format:** ASTM E57 3D file format

## What the source says

> 2d 45 35 37 | ASTM-E57 | 0 | e57 | ASTM E57 3D file format |

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-08-03. Review by: 2027-08-03.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).