SKF MB 10 lock washer for lock nuts 50 x 74 mm

Supplier number: SKF MB 10 | EAN 7316577757449

1.85 tax incl.

€1.53 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered as of 30/09/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

↓ Documents (1) ✆ Talk to a specialist

Secure locking for Skf nuts

Practical benefits

Prevents accidental loosening: By bending a tab into the lock nut slot, you keep components securely fastened during operation.
Quick and easy installation: The internal tab engages directly with the shaft keyway, letting you position it without hassle.
Exact and stable fit: Engineered with 50 x 74 mm dimensions, it pairs seamlessly with compatible KM series lock nuts.

In a nutshell

The right choise for

With the Skf mb 10 lock washer, you reliably prevent lock nuts on shafts and adapter sleeves from vibrating loose during heavy machinery operation. Designed with a 50 mm inside diameter and a 74 mm outside diameter, it delivers an exact fit for km 10 series lock nuts. The internal tab engages directly into the shaft keyway, allowing you to easily bend an outer tab into a slot on the nut for positive mechanical locking. This ensures precise axial retention of industrial bearings in gearboxes, pumps, and conveyors without the need for thread-locking adhesives.

Product information FAQ

€1.85

In stock - tax incl.

Key features according to our expert

Inner diameter: 50 mm
Outer diameter: 74 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: 50 mm
Outer diameter: 74 mm
Outside diameter: 74
Bore diameter: 50
Locking device: Lock washer

Brand SKF
01230635
EAN 7316577757449
Supplier number SKF MB 10

Frequently asked questions about this product

Answered by specialists

What is the SKF MB 10 lock washer used for?: It secures a KM 10 lock nut onto a shaft or adapter sleeve to prevent unintended loosening.
What are the dimensions of this lock washer?: It has an inside diameter of 50 mm, an outside diameter of 74 mm, and a thickness of 1.25 mm.
Which lock nuts are compatible with this washer?: The MB 10 is designed for use with metric KM 10 lock nuts.
How does the locking mechanism work?: The inner tab engages the shaft keyway, and an outer tab is bent into a slot on the lock nut.
Can you reuse a lock washer?: No, SKF recommends installing a new lock washer each time the lock nut is fitted.