Standard Locknut Miether


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N040 N000 Series

N040 - N000 Series, Locknuts, Products

N040

N000 locknuts are a thinner section version of our N and AN locknuts for larger sized shafts or sleeves (above 4 15/16”) and are, essentially, a continuation of NTH for sizes between 22 and 44.  They are most suitable for applications with thinner section spherical roller and ball bearings

This series of locknuts create a positive mechanical lock on the shaft when combined with a keyway and lockwasher. 

Features and benefits

  • Simple and reliable fastening element.
  • Thinner section locknut series commonly used with series 230 spherical roller bearings.
  • Simple installation and removal.
  • Standard Locknut sets the industry locknut standard

Price: $415.65


  • Locknuts have four, equally spaced slots around their circumference to accommodate a hook or impact spanner.
  • Can be mounted directly to the shaft or via an adapter sleeve.
  • N000 locknuts can be reused, provided they are not damaged. A new lockwasher or locking plate should be used each time the corresponding locknut is installed.
  • Lockwashers TW and WTH series are available for thread 0.391 to 8.628 in. (sizes 00 to 44)
  • N / AN series locknuts have tighter operational and installation clearances, higher installed accuracy, and lower rotating imbalance loads than hexagonal or square locknuts.
  • Conform with ABMA, SAE and ABEC standards for bearing and power transmission applications.  Bearing face to thread pitch diameter runout will not exceed .002 inches for sizes 00 through 06,.004 inches for sizes 07 through 22, and .006 inches for sizes above 22.
  • 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.
  • Manufactured with ANSI Class 3 threads.
  • Most suitable for applications using cams, clutches, gears, pulleys, sprockets, and other general industry power transmission applications.
Dimensions
C 9.443 INCH Outside Diameter
E 8.75 INCH Face Diameter
D 1.198 INCH Width
G 0.735 INCH Slot Width
d 7.847 INCH Thread Major Diameter
K1/M1 8 INCH No. Threads per Inch
Weight 6.548 LB