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1926_YBPpTO_b18.2.2-table8.jpg

Dimensions in inches (1 inch=25.4 mm) sourceASME B18.2.2 table 8 square heavy nuts

Publication date : 2010

d Thread size

UNC (nr of threads x inch)

UNF (nr of threads x inch)

F basic G min G max H basic H min H max
inch mm
1/4
6.35 20 28 0.500 0.640 0.707 1/4 0.218 0.266
5/16
3/8
7/16
1/2
5/8
3/4
7/8
1
1-1/8
1-1/4
1-3/8
1-1/2



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