Ansi B 92.1 Pdf 38 Info
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ANSI B92.1 defines fit classes as 4, 5, 6, and 7 (with subclasses like 5P, 6H, etc.). There is no "Class 38." Therefore, the most plausible interpretation is a direct page reference. ansi b 92.1 pdf 38
The original ANSI B92.1-1970 document runs approximately 80-100 pages (depending on appendix inclusion). Page 38 typically falls within the section covering inspection principles or tables for measurement over pins.
While I cannot reproduce the actual table, the format on page 38 typically resembles this (illustrative example): These engineering standards aggregators also offer the ANSI
| Tooth Nominal Pitch (P) | Tolerance Class | Allowance (es) | Effective Space Width Tolerance (T) | Over-Pin Measurement | |------------------------|----------------|----------------|--------------------------------------|----------------------| | 16/32 | 5 | 0.0000 | 0.0022 | 0.1234 / 0.1256 | | 20/40 | 6 | -0.0008 | 0.0028 | 0.0987 / 0.1012 | | 24/48 | 7 | -0.0012 | 0.0035 | 0.0800 / 0.0825 |
These values are critical for spline gage design and verifying fit. There is no "Class 38
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