FAG KM10

FAG KM10 Bearing Lock Nut

Description

The FAG KM10 is a metric axial lock nut designed for securing bearings and other machine components onto a shaft. Manufactured to DIN 981 standards, this nut ensures reliable performance and prevents loosening caused by vibration or dynamic loads. Its four peripheral slots allow for easy installation and removal using a standard hook or impact spanner.

Specifications

• Thread Size: M50x1.5
• Outer Diameter: 70 mm
• Width: 10 mm
• Material: Steel
• Standard: DIN 981
• Compatible Locking Washer: MB10

Label Info

• Manufacturer: FAG
• Type: KM10
• Part Number: 18021100
• EAN: 4012801174312

Application

This lock nut is widely used in mechanical engineering, automotive industries, and power transmission systems to mount bearings on shafts or adapter sleeves. It provides a simple, stable, and secure fastening method.

Country of Origin

This FAG product is manufactured in China, as indicated by the factory code XK on the packaging.

CO2 Impact

Choosing this new-in-box surplus item prevents the production of a new one, saving an estimated 0.22 kg of CO2 emissions. This saving is equivalent to driving a car for over 1 kilometer.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the purpose of the slots on the FAG KM10?

The four slots around the circumference are designed for a hook spanner (also known as a C-spanner or jaw spanner) to apply the correct torque for tightening or loosening the nut.

Which locking washer should be used with this nut?

The FAG KM10 lock nut is designed to be used with a corresponding MB10 locking washer. The washer’s inner tab fits into a keyway on the shaft, and one of its outer tabs is bent into a slot on the nut to prevent it from rotating.

Is this nut reusable?

Yes, the lock nut itself is reusable, provided it is not damaged. However, it is standard practice to use a new locking washer (MB10) each time the assembly is dismantled and re-secured, as the locking tab is bent during installation.

Last Update: Friday, March 13, 2026

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