Square nuts

Dimensional Drawing and Technical Diagrams

1668_ULUTRB_b18.2.2-table2.jpg

Key Dimensions and Technical Parameters

Dimensions in inches (1 inch=25.4 mm) sourceASME B18.2.2 2010 table 2 Square 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 min H max
inch mm
1/4
6.35 20 28 0.438 0.554 0.619 0.203 0.235
5/16
7.94 18 24 0.562 0.721 0.795 0.249 0.283
3/8
9.53 16 24 0.625 0.802 0.884 0.310 0.346
7/16
11.11 14 20 0.75 0.97 1.061 0.356 0.394
1/2
12.70 13 20 0.812 1.052 1.149 0.418 0.458
5/8
15.88 11 18 1 1.3 1.414 0.525 0.569
3/4
19.05 10 16 1.125 1.464 1.591 0.632 0.680
7/8
22.23 9 14 1.312 1.712 1.856 0.740 0.792
1
25.40 8 12 1.5 1.961 2.121 0.847 0.903
1-1/8 28.58 7 12 1.688 2.209 2.386 0.970 1.030
1-1/4 31.75 7 12 1.875 2.458 2.652 1.062 1.126
1-3/8 34.93 6 12 2.062 2.708 2.917 1.169 1.237
1-1/2 38.10 6 12 2.25 2.956 3.182 1.276 1.348