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BSI - BS 949-2

Screwing Taps Part 2: Specification for Unified Ground Thread Taps: Manufacturing Tolerances

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Organization: BSI
Publication Date: 15 December 1992
Status: active
Page Count: 31
ICS Code (Taps and threading dies): 25.100.50

Document History

BS 949-2
December 15, 1992
Screwing Taps Part 2: Specification for Unified Ground Thread Taps: Manufacturing Tolerances
A description is not available for this item.
BS 949-2
April 30, 1979
Screwing Taps Part 2: Taps for Unified Threads (and for the Obsolescent Whitworth and BA Forms)
General dimensions of short machine or hand taps and of long shank machine taps for Unified, BSW, BSF and BA threads, and dimensions and tolerances on the threaded portion of those taps.

References

This document references:
BS 1580-3 - Unified screw threads - Part 3: Screw threads with diameters below 1/4 in - Requirements
Published by BSI on December 31, 2007
A description is not available for this item.
This document references:
BS 93 - British Association (B.A.) screw threads - Requirements
Published by BSI on September 30, 2008
A description is not available for this item.
This document references:
BS 84 - Parallel screw threads of Whitworth form - Requirements
Published by BSI on November 30, 2007
A description is not available for this item.
This document is referenced by:
BS 3409-2 - Specification for The tapping of holes to receive wire thread inserts (UNC and UNF threads) - Part 2: Diameters below 1/4 in
Published by BSI on January 31, 1966
Limits of size for tapped holes to accommodate wire thread inserts to provide thread sizes from No. 2 to No. 12 UNC inclusive and from No. 2 to No. 12 UNF inclusive. Recommendations for general...
This document is referenced by:
BS 1936-1 - Specification Undercuts & Runouts for Screw Threads - Part 1: Inch Screw Threads
Published by BSI on December 31, 1952
Provides data of dimensions and profiles of machined undercuts for external and internal threads of Unified, Whitworth, B.A. and Cycle thread forms. Dimensions and tolerances are given for standard...
This document is referenced by:
BS 856 - Specification for Wing Nuts
Published by BSI on May 19, 1969
ISO metric, ISO inch (Unified), BSW, BSF and BA screw threads diameters 3 mm (⅛ in) to 20 mm (¾ in). Two forms of wing nut blank geometry; tables of dimensions for hot stamped and cast varieties...
This document is referenced by:
BS 3409-1 - Specification for The tapping of holes to receive wire thread inserts (UNC and UNF threads) - Part 1: Diameters 1/4 in and over
Published by BSI on August 16, 1961
Specifies limits of size for tapped holes to accommodate wire thread inserts to provide thread sizes from ¼ in to 1½ in UNC inclusive and from ¼ in to 1 in UNF inclusive. It includes recommendations...
This document is referenced by:
BS 949-4 - Screwing Taps - Part 4: Metric Ground Thread Taps: Manufacturing Tolerances
Published by BSI on June 29, 1990
Manufacturing tolerances on the threaded portion of taps for producing ISO metric threads of tolerance classes 4H to 8H and 4G to 6G. Valid for short taps specified in ISO/R 529 as well as any other...
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