BS 3409-1:1961
Current
The latest, up-to-date edition.
Specification for the tapping of holes to receive wire thread inserts (UNC and UNF threads) Diameters ¼ in and over
Hardcopy , PDF
English
16-08-1961
Co-operating organizations
Foreword
1 Scope
Section 1 - Tapped holes
2 Form of thread and limits of size
3 Identification
Section 2 - Screwing taps
4 General dimensions
5 Marking
6 Form of thread
7 Limits of size for cutting diameter
Section 3 - Gauging system
8 General
9 Design and general dimensions
10 Tolerances and limits of size
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