Nylon Insert Lock Nut. Hex nut with nylon-filled collar at it's back end. When the screw reaches the collar, the threads and nylon form a tight frictional fit, restricting movement of the screw when it is subjected to vibration.
| Thread Size |
"A" Width Across Flats |
"B" Width Across Corners |
Thickness |
Side Height |
| #2-56 |
1/4" |
0.268" |
0.143" |
0.081" |
| #3-48 |
1/4" |
0.268" |
0.143" |
0.081" |
| #4-40 |
1/4" |
0.268" |
0.143" |
0.081" |
| #5-40 |
1/4" |
0.268" |
0.143" |
0.081" |
| #6-32 |
5/16" |
0.339" |
0.178" |
0.103" |
| #8-32 |
11/32" |
0.374" |
0.229" |
0.140" |
| #10-24 |
3/8" |
0.410" |
0.239" |
0.140" |
| #10-32 |
3/8" |
0.410" |
0.239" |
0.140" |
| #12-24 |
7/16" |
0.482" |
0.315" |
0.225" |
| 1/4"-20 |
7/16" |
0.482" |
0.315" |
0.225" |
| 1/4"-28 |
7/16" |
0.482" |
0.315" |
0.225" |
| 5/16"-18 |
1/2" |
0.552" |
0.344" |
0.250" |
| 5/16"-24 |
1/2" |
0.552" |
0.344" |
0.250" |
| 3/8"-16 |
9/16" |
0.622" |
0.453" |
0.335" |
| 3/8"-24 |
9/16" |
0.622 |
0.453" |
0.335" |
| 7/16"-14 |
5/8" |
0.698" |
0.453" |
0.324" |
| 7/16"-20 |
5/8" |
0.698" |
0.453" |
0.325" |
| 1/2"-13 |
3/4" |
0.837" |
0.594" |
0.464" |
| 1/2"-20 |
3/4" |
0.837" |
0.594" |
0.464" |
| 9/16"-12 |
7/8" |
0.978" |
0.641" |
0.469" |
| 9/16"-18 |
7/8" |
0.978" |
0.641" |
0.469" |
| 5/8"-11 |
15/16" |
1.051" |
0.750" |
0.593" |
| 5/8"-18 |
15/16" |
1.051" |
0.750" |
0.593" |
| 3/4"-10 |
1-1/8" |
1.191" |
0.875" |
0.742" |
| 3/4"-16 |
1-1/8" |
1.191" |
0.875" |
0.742" |
| 7/8"-14 |
1-5/16" |
1.403" |
0.984" |
0.790" |
| 7/8"-9 |
1-5/16" |
1.403" |
0.984" |
0.790" |
| 1"-8 |
1-1/2" |
1.078" |
1.047" |
0.825" |
| 1"-14 |
1-1/2" |
1.078" |
1.047" |
0.825" |
| 1-1/8"-7 |
1-11/16" |
1.826" |
1.172" |
0.930" |
| 1-1/4"-7 |
1-7/8" |
2.038" |
1.391" |
1.125" |
| 1-1/4"-12 |
1-7/8" |
2.038" |
1.391" |
1.125" |
| 1-1/2"-6 |
2-1/4" |
2.444" |
1.609" |
1.313" |
