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Manufactured in house or by one of our parteners to a very high tolerance. Ideal for use with bearings or other precision components. Manufactured to commonly used dimesions. If Alternate dimensions are required, we can manufacture them for you.
Tolerances on the shoulder diameter are +0.000mm to -0.025mm
Tolerances on the shoulder length are +0.050mm to -0.000mm
Class 6g thread fit.

| ds (nom) |
ds | d | s | dk | k | b |
| 3.0 | 3.000-2.975 | M2 | 1.5 | 5.0 | 2.0 | 4 |
| 4.0 | 4.000-3.975 | M3 | 2.0 | 6.0 | 3.0 | 4 |
| 5.0 | 5.000-4.975 | M4 | 2.5 | 8.0 | 4.0 | 5 |
| 6.0 | 6.000-5.975 | M5 | 3.0 | 10 | 5.0 | 6 |
| 8.0 | 8.000-7.975 | M6 | 4.0 | 12 | 6.0 | 11 |
| 10 | 10.000-9.975 | M6 | 4.0 | 12 | 6.0 | 11 |
| 10 | 10.000-9.975 | M8 | 5.0 | 14 | 7.0 | 12 |
| 12 | 12.000-11.975 | M10 | 6.0 | 20 | 8.0 | 16 |
| Updated: 4th April 2026
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