HEX NYLON INSERT LOCKNUTS
NM/NE SERIES
All Dimensions in Inches
Size Thickness Across Flats Across Corners Prevailing
 Torque 
in-lbs. Max.
Ultimate Strength 
lbs. Min.
2/56 0.143 0.250 0.275 3.0 440
3/48 0.143 0.250 0.275 3.0 530
4/40 0.143 0.250 0.275 3.0 750
5/40 0.143 0.250 0.275 3.0 910
6/32 0.178 0.312 0.344 6.0 1,130
8/32 0.229 0.345 0.378 9.0 1,720
10/24 0.239 0.375 0.413 13.0 2,010
10/32 0.239 0.375 0.413 13.0 2,010
12/24 0.313 0.438 0.488 30.0 2.583
1/4-20 0.313 0.438 0.488 30.0 3,760
1/4-28 0.313 0.438 0.488 30.0 3,760
5/16-18 0.344 0.500 0.557 60.0 6,360
5/16-24 0.344 0.500 0.557 60.0 6,360
3/8-16 0.453 0.562 0.628 80.0 9,540
3/8-24 0.453 0.562 0.628 80.0 9,540
7/16-14 0.438 0.616 0.815 120.0 13,200
7/16-20 0.438 0.616 0.815 120.0 13,200
1/2-13 0.594 0.750 0.840 150.0 17,730
1/2-20 0.594 0.750 0.840 150.0 17,730
9/16-12 0.641 0.875 0.982 200.0 22,890
5/8-11 0.750 0.938 1.051 300.0 28,530
5/8-18 0.750 0.938 1.051 300.0 28,530
3/4-10 0.875 1.062 1.191 400.0 42,770
3/4-16 0.875 1.062 1.191 400.0 42,770
7/8-9 0.984 1.250 1.403 600.0 60,330
7/8-14 0.984 1.250 1.403 600.0 60,330
1-8 1.047 1.438 1.615 800.0 79,280
1-14 1.047 1.438 1.615 800.0 79,280
1-1/8-7 1.172 1.625 1.826 900.0 116,700
1-1/8-12 1.172 1.625 1.826 900.0 116,700
1-1/4-7 1.391 1.812 2.038 1.000.0 147,930
1-1/4-12 1.391 1.812 2.038 1.000.0 147,930
1-3/8-6 1.578 2.000 2.249 1.200.0 161,000
1-3/8-12 1.578 2.000 2.249 1.200.0 161,000
1-1/2-6 1.609 2.188 2.416 1.350.0 194,000
1-1/2-12 1.609 2.188 2.416 1.350.0 194,000