32 mm spanner
32.00 mm · 1.26 in
32 mm across the flats
The nearest imperial size
1-1/8″ is 28.57 mm — 3.43 mm smaller than 32 mm.
That is not close enough. 1-1/8″ is smaller than the 32 mm head, so it will not go on at all — which is the harmless failure of the two.
The numbers
| Across flats | 32.00 mm · 1.26 in |
| Nearest imperial | 1-1/8″ — 28.57 mm |
| Difference | 3.43 mm — not safe to substitute |
Nearby metric sizes
| Size | mm | Nearest imperial | Gap |
|---|---|---|---|
| 30 mm | 30.00 | 1-1/8″ | 1.43 mm — do not |
| 32 mm | 32.00 | 1-1/8″ | 3.43 mm — do not |
Frequently asked questions
What is 32 mm in inches?
1.26 inches. The nearest imperial spanner is 1-1/8″ at 28.57 mm, 3.43 mm smaller.
Can I use 1-1/8″ instead of 32 mm?
Not safely. The gap is 3.43 mm. 1-1/8″ is smaller than 32 mm and simply will not go on.
Where is 32 mm used?
It sits between the standard hex head sizes rather than on one, so it turns up on proprietary fasteners, plumbing fittings and older machinery rather than on ordinary bolts.