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Homepage>BS Standards>25 MANUFACTURING ENGINEERING>25.100 Cutting tools>25.100.50 Taps and threading dies>BS 3409-2:1966 Specification for the tapping of holes to receive wire thread inserts (UNC and UNF threads) Diameters below ¼ in
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immediate downloadReleased: 1966-01-31
BS 3409-2:1966 Specification for the tapping of holes to receive wire thread inserts (UNC and UNF threads) Diameters below ¼ in

BS 3409-2:1966

Specification for the tapping of holes to receive wire thread inserts (UNC and UNF threads) Diameters below ¼ in

CURRENCY
LANGUAGE
English
Standard number:BS 3409-2:1966
Pages:14
Released:1966-01-31
ISBN:0 580 35793 7
Status:Standard
DESCRIPTION
This standard BS 3409-2:1966 Specification for the tapping of holes to receive wire thread inserts (UNC and UNF threads) is classified in these ICS categories:
  • 25.100.50 Taps and threading dies

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 dimensions and limits of size on the threaded portion of screwing taps intended to produce holes to the limits specified; details of a recommended gauging system for checking them.
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