KM Series Bearing Locknuts – ISO Metric

The KM series is the standard ISO metric bearing locknut and the metric equivalent of the inch N series. It is used with a matching MB series lockwasher, whose tab bends into a nut slot to lock the assembly while its key seats in the shaft keyway. Threads follow the ISO metric bearing series, so KM nuts interchange with the metric locknuts fitted to imported bearings and gear units.

KM Series Specifications

• Part numbers: KM-00 through KM-72 (48 sizes stocked)
• Bore / shaft size: 10 mm to 200 mm
• Outside diameter: 18 mm to 250 mm
• Material & temperature: Carbon steel, black oxide finish; 300°F maximum operating temperature
• Standards: ISO 2982-2:2013(E); made in USA, RoHS compliant

Applications

Bearing retention on metric threaded shafts and adapter sleeves in metric gearboxes, electric motors, pumps, fans and imported production equipment.

Related Whittet-Higgins Series

• MB Series Bearing Lockwashers – ISO Metric
• KMS Series Bearing Locknuts – Metric, Stainless Steel
• KML / KMM Series Bearing Locknuts – Metric, Left-Hand & High-Strength
• BM Series BEARHUG Locknuts – Metric
• BASM Series Bearing Assembly Sockets – Metric

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.