Products
NMTB Taper Specifications
- Meets or exceeds ANSI B5-18 specifications.
- Taper is toleranced so that any error increases rate of taper only. Refer to Manufacturing Specifications for tolerance specifications.
- Parlec provides tooling in a variety of taper styles including BT, V-Flange, ISO 7388 (DIN NOTCH), ISO 7388/1 (DIN 69871/B), Morse, Automotive, Kearney and Trecker, Sundstrand, and others upon request.
- Erickson quick-change spindle qualified.
- Refer to Manufacturing Specifications for taper accuracies.
NMTB Tapers
| Taper Type | Gageline D1 | D2 | L1 | L2 | L3 | L4 | L5 | L6 | Thread |
|---|---|---|---|---|---|---|---|---|---|
| N30 | 1.250 | 1.825 | 2.687 | 0.344 | 0.421 | 0.905 | 0.640 | 0.645 | 1/2 – 13 |
| N40 | 1.750 | 2.500 | 3.687 | 0.312 | 0.389 | 0.956 | 0.883 | 0.645 | 5/8 – 11 |
| N50 | 2.750 | 3.900 | 5.000 | 0.640 | 0.765 | 1.000 | 1.382 | 1.013 | 1 – 8 |
