
Gages and Gaging for Unified Inch Screw Threads (UN, UNR, and UNJ)
STANDARD published on 2026
Designation standards: ASME B1.2:2025
Publication date standards: 2026
The number of pages: 278
Approximate weight : 865 g (1.91 lbs)
Country: American technical standard
Category: Technical standards ASME
This Standard provides essential specifications and dimensions for the gages used on Unified inch screw threads UN [unified] and UNR [external threads only] thread form, and covers the specifications and dimensions for the thread gages and measuring equipment listed in Tables 1 and 2. The basic purpose and use of each gage are also described. See more