
MB-13
MB13 Standard Locknut Part Number
This is the most popular series of metric washers that is coupled with KM series metric locknuts. Lockwashers engage a keyway in a shaft or adapter sleeve slot, then locks the accompanying locknut in position by bending one of the washer tabs into the nut’s outside diameter slots.
Features and benefits
- Fast and simple to use mating component to a locknut.
- Specific sizes to accommodate metric applications.
- Simple installation and removal.
- Standard Locknut sets the industry locknut standard
- MB lockwashers have a 25 degree tang angle.
- Can be mounted directly to the shaft or on an adapter sleeve.
- A new lockwasher should be used each time the corresponding KM locknut and assembly is reinstalled.
- Unless otherwise specified, manufactured from AISI grade 1020 series steel.
- Most suitable for applications using cams, clutches, gears, pulleys, sprockets, and other general industry power transmission applications.

Dimensions | |||
---|---|---|---|
R | 2.559 | INCH | Bore |
E | 3.11 | INCH | Face Diameter |
B | 3.622 | INCH | Dia. over Tangs |
S | 0.315 | INCH | Key Width |
X | 2.461 | INCH | Inside Dia. |
NOTAN | 17 | INCH | No. of Tangs |
T | 0.276 | INCH | Tang Width |
Q | 0.059 | INCH | Material Thickness |
Weight | 6 | LB/100 |