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Specification for the tapping of holes to receive wire thread inserts (UNC and UNF threads). Diameters below 1 in.
Automatically translated name:
Specification for the tapping of holes to receive wire thread inserts (UNC and UNF threads). Diameters below $9D in
STANDARD published on 31.1.1966
Designation standards: BS 3409-2:1966
Publication date standards: 31.1.1966
SKU: NS-64344
The number of pages: 14
Approximate weight : 42 g (0.09 lbs)
Country: British technical standard
Category: Technical standards BS
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. Status: Confirmed
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Latest update: 2026-08-28 (Number of items: 2 298 625)
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