The Timken Company - Inch Accessories - Locknut and Lockwasher

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The chart below shows dimensions for locknuts and lockwashers used in the mounting of straight bore bearings on shafts.
Other dimensions and tolerances related to shaft configurations are also shown.
Dimensions are presented according to bearing bore size and are applicable to bearings in the various series (e.g., 222 and 223 etc.).

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Unit of Measure

Items	N 07-W 07 Inch Accessories - Locknut and Lockwasher	N 08-W 08 Inch Accessories - Locknut and Lockwasher	N 09-W 09 Inch Accessories - Locknut and Lockwasher	N 10-W 10 Inch Accessories - Locknut and Lockwasher	N 11-W 11 Inch Accessories - Locknut and Lockwasher
Bearing Bore	N/A 35 mm	N/A 40 mm	N/A 45 mm	N/A 50 mm	N/A 55 mm
Major Diameter	N/A 34.95 mm1.376 in	N/A 39.7 mm1.563 in	N/A 44.88 mm1.767 in	N/A 49.96 mm1.967 in	N/A 54.79 mm2.157 in
Threads No. per Inch	N/A 18
Relief Diameter A	N/A 32.94 mm1.297 in	N/A 37.69 mm1.484 in	N/A 42.88 mm1.688 in	N/A 47.96 mm1.888 in	N/A 52.78 mm2.078 in
Diameter S-3	N/A 31.75 mm1.25 in	N/A 36.51 mm1.4375 in	N/A 42.86 mm1.6875 in	N/A 47.63 mm1.875 in	N/A 52.39 mm2.0625 in
W¹	N/A 2.77 mm0.109 in	N/A 2.77 mm0.109 in	N/A 3.58 mm0.141 in	N/A 3.58 mm0.141 in	N/A 3.58 mm0.141 in
L²	N/A 10.34 mm0.407 in	N/A 11.13 mm0.438 in	N/A 10.31 mm0.406 in	N/A 11.89 mm0.468 in	N/A 11.89 mm0.468 in
H³	N/A 2.4 mm0.094 in	N/A 2.4 mm0.094 in	N/A 2.4 mm0.094 in	N/A 2.4 mm0.094 in	N/A 3.2 mm0.125 in
S⁴	N/A 4.78 mm0.188 in	N/A 7.92 mm0.312 in	N/A 7.92 mm0.312 in	N/A 7.92 mm0.312 in	N/A 7.92 mm0.312 in
M⁵	N/A 3.18 mm0.125 in	N/A 3.18 mm0.125 in	N/A 3.96 mm0.156 in	N/A 3.96 mm0.156 in	N/A 3.96 mm0.156 in
C₁	N/A 52.53 mm2.068 in	N/A 57.28 mm2.255 in	N/A 64.41 mm2.536 in	N/A 68.4 mm2.693 in	N/A 75.54 mm2.974 in
D	N/A 11.38 mm0.448 in	N/A 11.38 mm0.448 in	N/A 11.38 mm0.448 in	N/A 12.95 mm0.51 in	N/A 12.95 mm0.51 in
Q	N/A 1.02 mm0.04 in	N/A 1.22 mm0.048 in	N/A 1.22 mm0.048 in	N/A 1.22 mm0.048 in	N/A 1.35 mm0.053 in
R	N/A 35.46 mm1.396 in	N/A 40.21 mm1.583 in	N/A 45.52 mm1.792 in	N/A 50.6 mm1.992 in	N/A 55.42 mm2.182 in
B	N/A 57.150 mm2.2500 in	N/A 63.4 mm2.496 in	N/A 69.44 mm2.734 in	N/A 74.22 mm2.922 in	N/A 78.97 mm3.109 in
s	N/A 4.47 mm0.176 in	N/A 7.37 mm0.29 in	N/A 7.37 mm0.29 in	N/A 7.37 mm0.29 in	N/A 7.37 mm0.29 in
Locknut	N/A N 07	N/A N 08	N/A N 09	N/A N 10	N/A N 11
Lockwasher	N/A W 07	N/A W 08	N/A W 09	N/A W 10	N/A W 11
B	N/A
¹ Tolerance -0 to + 0.4 mm (-0 to +1/64 in) ² Tolerance -0 to + 0.4 mm (-0 to +1/64 in) ³ Tolerance -0 to + 0.4 mm (-0 to +1/64 in) ⁴ Tolerance -0 to + 0.4 mm (-0 to +1/64 in) ⁵ Tolerance -0 to + 0.4 mm (-0 to +1/64 in)