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ASME B18.31.3-2014 (R2019)
Threaded Rods (Inch Series)
This Standard covers the general and dimensional data for inch series threaded rods. Included are the following thread configurations and diameters: UNC threads #4 through 4 inches; UNF threads #4; through 1-1/2 inches; 8 UN threads 1-1/8 through 4 inches; Acme threads 1/4 through 5 inches.
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American Society of Mechanical Engineers [asme]