Table 24. AFBMA Standard Locknuts (Series N-00) for Ball Bearings and Cylindrical and Spherical Roller Bearings and (Series TN-00) for Tapered Roller Bearings. Inch Design
D
N-00 to N-06 = .002 Max. N-07 to AN-15 = .004 Max. TN-065 to TAN-15 = .002 Max. Runout and Parallelism of Faces Measured on a Tight Fiting Threaded Arbor.
50°
G
Surface Finish Note TN-065 to TN-11, 100 in., Max. TN-12 to TN-15, 120 in., Max.
Threads ( see note )
E
d
C
H
N-00 through AN-15 TN-065 through TAN-15
50° Max. 45° Min.
Slot dimension
Thread Minor Dia.
Thread Pitch Dia.
Thd. Major Dia. d
Outside Dia. C
Face Dia. E
Thickness D
BB & RB Nut No.
TRB Nut No.
Thds. per Inch
Width G
Height H
Min.
Max. 0.3606 0.4386 0.5556 0.6336 0.7506 0.9386 1.1189 1.2584 1.3219 1.5089 1.7129 1.9129 2.1029 2.3059 2.4949 2.6969 2.8518
Min.
Max. 0.3733 0.4513 0.5687 0.6467 0.7641 0.9521 1.1409 1.2804 1.3439 1.5314 1.7354 1.9354 2.1260 2.3290 2.5170 2.7200 2.8843
Min. 0.391 0.469 0.586 0.664 0.781 0.969 1.173 1.312 1.376 1.563 1.767 1.967 2.157 2.360 2.548 2.751 2.933
Max. 0.755 0.880 1.005 1.130 1.380 1.568 1.755 2.068 2.068 2.255 2.536 2.693 2.974 3.161 3.380 3.630 3.880
Min.
Max.
Min. .120 .120 .120 .120 .178 .178 .178 .178 .178 .240 .240 .240 .240 .240 .240 .240 .360
Max. .130 .130 .130 .130 .198 .198 .198 .198 .198 .260 .260 .260 .260 .260 .260 .260 .385
Max. .073 .073 .104 .104 .104 .104 .104 .104 .104 .104 .104 .104 .135 .135 .135 .135 .135
Min. .209 .303 .303 .334 .365 .396 .396 .428 .428 .428 .428 .490 .490 .521 .553 .553 .584
Max. .229 .323 .323 .354 .385 .416 .416 .448 .448 .448 .448 .510 .510 .541 .573 .573
N-00 N-01 N-02 N-03 N-04 N-05 N-06 N-07 N-08 N-09 N-10 N-11 N-12 N-13 N-14
— 32 — 32 — 32 — 32 — 32 — 32 — 18
0.3572 0.4352 0.5522 0.6302 0.7472 0.9352 1.1129 1.2524 1.3159 1.5029 1.7069 1.9069 2.0969 2.2999 2.4879 2.6909
0.3707 0.4487 0.5657 0.6437 0.7607 0.9487 1.1369 1.2764 1.3399 1.5269 1.7309 1.9309 2.1209 2.3239 2.5119 2.7149
.605 .699 .793 .918
.625 .719 .813 .938
1.105 1.261 1.480 1.793 1.793 1.980 2.261 2.418 2.636 2.824 3.043 3.283 3.533
1.125 1.281 1.500 1.813 1.813 2.000 2.281 2.438 2.656 2.844 3.063 3.313 3.563
TN-065 TN-07 TN-08 TN-09 TN-10 TN-11 TN-12 TN-13 TN-14 TAN-15
18 18 18 18 18 18 18 18 18 12
AN-15 .604 All dimensions in inches. For dimensions in millimeters, multiply inch values, except thread diameters, by 25.4 and round result to two decimal places. Threads are American National form, Class 3. Typical steels for locknuts are: AISI, C1015, C1018, C1020, C1025, C1035, C1117, C1118, C1212, C1213, and C1215. Minimum hardness, tensile strength, yield strength and elongation are given in ANSI/ABMA 8.2-1991 which also lists larger sizes of locknuts. 2.8428 2.8789
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