Standard Locknut Miether


Product Selector

KM29 KM00 Series

KM29 - KM00 Series, Locknuts, Products

KM29

This is the most popular series of metric locknuts.  This series creates a positive mechanical lock on a metric standard shaft when combined with a keyway and lockwasher. 

Features and benefits

  • Simple and reliable fastening element for metric-based applications.
  • Comprehensive size range.
  • Simple installation and removal.
  • Standard Locknut, setting the industry standard.
  • Excellence Made Standard.
  • Proudly made in the USA for over 70 years.

Price: $367.38


  • Locknuts have four, equally spaced slots around their circumference to accommodate a hook or impact spanner.
  • KM locknuts are commonly used with 12, 13, 222, 223, and 232 series spherical roller bearings.
  • Can be mounted directly to the shaft or via an adapter sleeve.
  • KM locknuts can be reused, provided they are not damaged. A new MB series lockwasher or MS locking clamp should be used each time the corresponding locknut is installed.
  • Lockwashers are available for sizes 00 to 56.Locking clamps for larger sizes.
  • KM series locknuts have tighter operational and installation clearances, higher installed accuracy, and lower rotating imbalance loads than hexagonal or square locknuts.
  • Conform with ISO standards M threads for sizes 00 through 19, M1 for sizes between 20 and 40, and Tr above size 44.
  • Unless otherwise specified, manufactured from AISI grade 1000 or 1200 series steel.
  • Bearing face surface finish will not exceed 100 microinches for sizes 00-10, 120 microinches for sizes 11-22, and 150 microinches for sizes above 22.
  • Most suitable for applications using cams, clutches, gears, pulleys, sprockets, and other general industry power transmission applications.
Dimensions
C 7.48 INCH Outside Diameter
E 6.732 INCH Face Diameter
D 0.945 INCH Width
G 0.551 INCH Slot Width
MT M145X2 INCH Metric Thread
Weight 4.331 LB