Hex Flat Nuts and Hex Flat Jam Nuts

Dimensional Drawing and Technical Diagrams

2018_naqJoF_asme-18.2.2-table3.jpg

Key Dimensions and Technical Parameters

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Dimensions in inches (1 inch=25.4 mm) sourceASME B18.2.2 Table 3

Publication date: 2010

Nominal size or basic major thread diameter
G min
G max
F basic
H min Hmax H1 min H1 max
1-1/8 (1.1250) 1.859 1.949 1.688 0.970 1.030 0.595 0.655
1-1/4 (1.2500) 2.066 2.165 1.875 1.062 1.126 0.718 0.782
1-3/8 (1.3750) 2.273 2.382 2.062 1.169 1.237 0.778 0.846
1-1/2 (1.5000) 2.480 2.598 2.250 1.276 1.348 0.839 0.911