This is the stainless steel adaptor #A-5555-0228. It has an M5 thread mount (pin) that connects to an M4 thread (hole).
| Threads | M5/M4 |
| Length (L) | 10.0 mm |
| Width (DG) | 11.0 mm |
| Material | Stainless Steel |
| Mass | 5.2 g |
Sale!
(A-5555-0228) M5 to M4 SS adaptor, L 10 mm, for Zeiss applications
$17.00
A-5555-0228 | 
M5 to M4 stainless steel adaptor | M5/M4 | Renishaw
| Weight | 0.011023113109244 oz |
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