05-05-2010, 05:33 PM
Citat:quote:
These series (and the UNR , UNJ and fixed-pitch series) are the inch-based thread series currently used in the United States, and have been since 1949. 1 They superceded the American National Series (NC, NF, etc.) Pink shading indicates secondary sizes whose use is discouraged by standards organizations
Jeg læser det som: Disse serier (UNF, UNEF UNC osv.) OG UNR osv.
har erstattet NC, NF osv.
Altså bare alm. 1/4" UNC efter den "nye" standard.