What are the dimensions of this SKF lock washer?

The SKF MB 0 has an inner diameter of 10 mm, an outer diameter of 21 mm, and a thickness of 1 mm.

Which lock nut is compatible with the SKF MB 0?

This lock washer is designed for use in combination with the SKF KM 0 metric lock nut.

How does this lock washer secure the nut on the shaft?

The inner tab engages the shaft keyway, and you bend an outer tab into one of the slots on the lock nut.

Can an SKF MB 0 lock washer be reused?

No, you should always install a new lock washer whenever the lock nut is reinstalled for a reliable lock.

What material is the SKF MB 0 made of?

This lock washer is manufactured from steel to ensure stable and reliable mechanical fastening.

SKF MB 0 lock washer for lock nuts 10 x 21 mm

Supplier number: SKF MB 0 | EAN 7316570189964

1.29 tax incl.

€1.07 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered tomorrow 09/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Delivered from Belgium

↓ Documents (1) ✆ Talk to a specialist

Reliable shaft locking with Skf

Practical benefits

Prevents unintentional loosening: The robust tabs engage directly with keyways to ensure you keep lock nuts firmly fixed in place.
Quick and easy installation: You simply bend an outer tab into the nut slot to achieve immediate and secure mechanical locking.
Accurate standard dimensions: Designed with a 10 mm bore and 21 mm outside diameter, it delivers an exact fit on shafts.

In a nutshell

The right choise for

With the Skf mb 0 lock washer, you reliably protect bearings and lock nuts against loosening caused by operational vibration. Designed for use with the km 0 metric lock nut, this steel lock washer ensures a positive mechanical lock on shafts. The inner tab engages cleanly with the shaft keyway, allowing you to easily bend an outer tab into one of the nut slots for dependable retention. Featuring a 10 mm bore diameter, a 21 mm outside diameter, and a thickness of 1 mm, it maintains bearing preload and axial alignment during the maintenance and rebuilding of gearboxes, electric motors, and mechanical drive systems.

Product information FAQ

€1.29

In stock - tax incl.

Key features according to our expert

Inner diameter: 10 mm
Outer diameter: 21 mm

Product description

MB and MBL lock washers are locking devices, used to secure KM, KML and HM .. T lock nuts onto a shaft or adapter sleeve and prevent unintentional loosening. MB .. A is a stronger version of the MB washer. The lock washers engage a keyway in the shaft or adapter sleeve thread. They lock the nut in position when one of the washer tabs is bent into one of the slots in the outside diameter of the lock nut. A new lock washer should be used each time the corresponding lock nut is installed.

Simple, stable and reliable fastening element
Easy to install and remove
Used for KM, KML, and HM .. T lock nuts

Documents

⤓ Technical data sheet PDF

All Features

Inner diameter: 10 mm
Outer diameter: 21 mm
Outer diameter: 21
Bore diameter: 10
Locking device: Lock washer

Brand SKF
01230625
EAN 7316570189964
Supplier number SKF MB 0

Frequently asked questions about this product

Answered by specialists

What are the dimensions of this SKF lock washer?: The SKF MB 0 has an inner diameter of 10 mm, an outer diameter of 21 mm, and a thickness of 1 mm.
Which lock nut is compatible with the SKF MB 0?: This lock washer is designed for use in combination with the SKF KM 0 metric lock nut.
How does this lock washer secure the nut on the shaft?: The inner tab engages the shaft keyway, and you bend an outer tab into one of the slots on the lock nut.
Can an SKF MB 0 lock washer be reused?: No, you should always install a new lock washer whenever the lock nut is reinstalled for a reliable lock.
What material is the SKF MB 0 made of?: This lock washer is manufactured from steel to ensure stable and reliable mechanical fastening.