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ASME B18.16.6 Standard Dimensions for Nylon insert lock nuts, inch series

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This standard covers the complete requirements for carbon steel, inch series nylon insert locknuts of property grades NE2, NE5 and NE8 designated as National American Standard.

Dimensional Drawing and Technical Diagrams

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Key Dimensions and Technical Parameters

Dimensions in inches (1 inch=25.4 mm) sourceASME B18.16.6 2008 table 1 Nylon insert locknuts. inch series
d Thread size

UNC (nr of threads x inch)

UNF (nr of threads x inch)

 B max C min D min E min
inch mm
1/4
 6.35 20 28 0.44 0.488 0.298 0.225
5/16
 7.94 18 24 0.5 0.557 0.329 0.25
3/8
 9.53 16 24 0.56 0.628 0.438 0.335
7/16
 11.11 14 20 0.627 0.698 0.438 0.324
1/2
 12.70 13 20 0.75 0.84 0.579 0.464
9/16
 14.29 12 18 0.877 0.98 0.626 0.469
5/8
 15.88 11 18 0.94 1.05 0.735 0.593
3/4
 19.05 10 16 1.06 1.19 0.86 0.742
7/8
 22.23 9 14 1.25 1.40 0.969 0.79
1
 25.40 8 12 1.44 1.619 1.016 0.825
1-1/8 28.58 7 12 1.627 1.83 1.141 0.93
1-1/4 31.75 7 12 1.815 2.046 1.36 1.125
1-3/8 34.93 6 12 2 2.259 1.547 1.282
1-1/2 38.10 6 12 2.197 2.47 1.578 1.313

Reproduced by permission of DIN Deutsches Institut für Normung e. V. The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from Beuth Verlag GmbH, Burggrafenstraße 6, 10787 Berlin, Germany.
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