Monroe Engineering Datasheets for Locknuts

Locknuts are a type of prevailing-torque fastener that resists loosening under vibration and torque. They differ from standard nuts because they typically have friction-increasing bearing surfaces (e.g., pitted grooves on flanges) or special internal thread-geometries.
Locknuts: Learn more

Product Name Notes
Jam Nuts -- NCS-190
Jam Nuts -- NCS-250
Jam Nuts -- NCS-312
Jam Nuts -- NCS-375
Jam Nuts -- NCS-500
Jam Nuts -- NCS-625
Black Oxide Finish
Hex Jam Nuts -- NJ-1000
Hex Jam Nuts -- NJ-250
Hex Jam Nuts -- NJ-312
Hex Jam Nuts -- NJ-375
Hex Jam Nuts -- NJ-500
Hex Jam Nuts -- NJ-625
Hex Jam Nuts -- NJ-750
Hex Jam Nuts -- NJ-875
Hardened Black Oxide Finish
Lock Nuts -- 2710
Lock Nuts -- 2711
Lock Nuts -- 2712
Lock Nuts -- 2713
Lock Nuts -- 2714
Material - Steel Heat Treated Steel Black Oxide Finish Saves time where knob must be completely removed from stud member. Knob can be slid along length of stud. Tilt to...