Screw gauge limits and tolerances -- Limits of size for gauges for screw threads of unified form diameters 1/4 in and larger
This British Standard specifies the limits of size for the following types of gauges, setting plugs and check plugs for the various classes of standard Unified Coarse (UNC), Unified Fine (UNF) and Unified Extra Fine (UNEF) threads specified in BS 1580-1.
NOTE The values tabulated in this standard have been derived from the application of the tolerances specified in BS 919-1 to the limits of size given in
BS 1580-1
, and reference should be made to the former standard for general information, details of the form of thread for Unified screw gauges, and tolerances on pitch and thread angle.
| SDO | BSI: British Standards Institution |
| Document Number | 919-4 |
| Publication Date | Sept. 30, 2009 |
| Language | en - English |
| Page Count | 70 |
| Revision Level | |
| Supercedes | |
| Committee | FME/9 |