FAG KM15

FAG KM15 Lock Nut for Bearing Assemblies

Description

The FAG KM15 is a high-quality lock nut, manufactured to DIN 981 standards. It is designed for securing bearings and other components onto a shaft, ensuring they are located axially and preventing loosening due to vibration or operational loads. Its four equally spaced slots on the outer circumference allow for easy tightening and loosening with a standard hook or impact spanner.

Specifications

• Manufacturer: FAG
• Type: Lock Nut KM15
• Thread: M75x2
• Standard: DIN 981
• Outer Diameter: 100 mm
• Width: 13 mm
• Material: Steel

Label Info

• Part Number: KM15
• EAN: 4012801052528
• Internal Code: 3000N0417/0000170417/016731913-0000-02

Application

Commonly used in a wide range of industrial machinery, including gearboxes, pumps, and conveyor systems, to secure bearings on adapter sleeves or directly on threaded shafts.

Country of Origin

Made in Germany.

CO2 Impact

Choosing this surplus component over a new one saves approximately 0.7 kg of CO2 emissions, contributing to a more sustainable industrial environment. This is equivalent to fully charging a smartphone 84 times.

Availability

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

FAQ

Question?
What is the correct tightening procedure for a FAG KM15 lock nut?

The KM15 should be tightened using a suitable hook spanner (C-spanner) that fits the notches on its circumference. It is typically used with a corresponding MB15 locking washer. The nut is tightened to the required torque, and then a tab on the washer is bent into one of the nut’s slots to prevent it from loosening. Always refer to the machine’s maintenance manual for specific torque values.

Question?
What is the thread specification for the KM15?

The FAG KM15 has a metric fine thread of M75x2. This means it has a nominal diameter of 75 mm and a thread pitch of 2 mm.

Question?
Is this nut compatible with bearings from other manufacturers like SKF?

Yes, the KM15 lock nut is manufactured according to the DIN 981 standard. This means it is dimensionally interchangeable with other DIN 981 compliant lock nuts, such as the SKF KM 15, for use with adapter sleeves or on shafts with the corresponding M75x2 thread.

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Last Update: Friday, March 13, 2026