BS-1981 › Complete Document History
Specification for unified machine screws and machine screw nuts
Complete Current Edition: |
1991 EDITION - SPECIFICATION FOR UNIFIED MACHINE SCREWS and MACHINE SCREW NUT - Aug. 30, 1991
AMD 7485 - AMENDMENT 1 FOR 1991 EDITION - Jan. 15, 1993 |
Obsolete Revision Information: |
1972 EDITION - OBSOLETE EDITION - Jan. 1, 1972
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