32 products
NL Series Bearing Locknuts – Inch, Left-Hand Threads
The NL series is the left-hand-thread version of the standard N inch bearing locknut. On a shaft turning in the direction that would unscrew a right-hand nut, a left-hand thread means shaft rotation tightens rather than loosens the assembly. Dimensions, spanner slots and the matching W series lockwasher are otherwise identical to the right-hand N nut of the same size.
NL Series Specifications
- Part numbers: NL-00 through NL-40 (32 sizes stocked)
- Bore / shaft size: 0.391 in to 7.847 in
- Outside diameter: 0.75 in to 9.844 in
- Material & temperature: Carbon steel, black oxide finish; 300°F maximum operating temperature
- Standards: ANSI/ABMA 8.2-1999; made in USA, RoHS compliant
Applications
Counter-rotating and double-ended shafts, twin-screw extruders, mixer drives and any assembly where rotation direction would back off a right-hand locknut.
Related Whittet-Higgins Series
- N / AN Series Bearing Locknuts – Inch, SAE
- W Series Bearing Lockwashers – Inch
- KML / KMM Series Bearing Locknuts – Metric, Left-Hand & High-Strength
- BHL / BML Series BEARHUG Locknuts – Left-Hand Threads
- PL Series Precision Locknuts – Left-Hand Threads
Apollo is an authorized Whittet-Higgins distributor. Every part on this page is genuine Whittet-Higgins, manufactured in the USA. Need a size that is not listed, or help matching a locknut to its lockwasher and assembly socket? Contact our team.

