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Tapered Shaft End and Mating Hole Design

ANSI Hardware Deign and Engineering Data

Tapered Shaft End and Mating Hole with Slotted Nuts
Tapered Shaft End and Mating Hole with Slotted Nuts
Taper per Ft. = 1.500 ± 0.002
H is measured Perpendicular to key
C, Cotter Pin Hole has centerline
Displaced 90° From Keyway Center

Tapered Shaft End and Mating Hole with Slotted Nuts Design Data Dimensions Per. SAE Standard
All dimensions are given in inch units

Nom.
Dia.
Dia. of
Shaft,
Ds
Dia. of
Hole,
Dh
Lc
Ls
Lh
Lt
Ts
Tp
Nut Width,
Flats
Max.
Min.
Max.
Min.
1⁄4
0.250
0.249
0.248
0.247
9⁄16
5⁄16
3⁄8
5⁄16
7⁄32
9⁄64
5⁄16
3⁄8
0.375
0.374
0.373
0.372
47⁄64
7⁄16
1⁄2
23⁄64
17⁄64
3⁄16
1⁄2
1⁄2
0.500
0.499
0.498
0.497
63⁄64
11⁄16
3⁄4
23⁄64
17⁄64
3⁄16
1⁄2
5⁄8
0.625
0.624
0.623
0.622
13⁄32
11⁄16
3⁄4
17⁄32
7⁄16
1⁄4
3⁄4
3⁄4
0.750
0.749
0.748
0.747
111⁄32
15⁄16
1
17⁄32
7⁄16
1⁄4
3⁄4
7⁄8
0.875
0.874
0.873
0.872
111⁄16
11⁄8
11⁄4
11⁄16
1⁄2
5⁄16
15⁄16
1
1.001
0.999
0.997
0.995
115⁄16
13⁄8
11⁄2
11⁄16
1⁄2
5⁄16
11⁄16
1 1⁄8
1.126
1.124
1.122
1.120
115⁄16
13⁄8
11⁄2
11⁄16
1⁄2
5⁄16
11⁄4
1 1⁄4
1.251
1.249
1.247
1.245
115⁄16
13⁄8
11⁄2
11⁄16
1⁄2
5⁄16
17⁄16
1 3⁄8
1.376
1.374
1.372
1.370
27⁄16
17⁄8
2
11⁄16
1⁄2
5⁄16
17⁄16
1 1⁄2
1.501
1.499
1.497
1.495
27⁄16
17⁄8
2
11⁄16
1⁄2
5⁄16
17⁄16
1 5⁄8
1.626
1.624
1.622
1.620
213⁄16
21⁄8
21⁄4
13⁄16
5⁄8
7⁄16
23⁄16
1 3⁄4
1.751
1.749
1.747
1.745
213⁄16
21⁄8
21⁄4
13⁄16
5⁄8
7⁄16
23⁄16
1 7⁄8
1.876
1.874
1.872
1.870
31⁄16
23⁄8
21⁄2
13⁄16
5⁄8
7⁄16
23⁄16
2
2.001
1.999
1.997
1.995
39⁄16
27⁄8
3
13⁄16
5⁄8
7⁄16
23⁄16
2 1⁄4
2.252
2.248
2.245
2.242
39⁄16
27⁄8
3
13⁄16
5⁄8
7⁄16
23⁄8
2 1⁄2
2.502
2.498
2.495
2.492
49⁄32
33⁄8
31⁄2
11⁄4
1
5⁄8
31⁄8
2 3⁄4
2.752
2.748
2.745
2.742
49⁄32
33⁄8
31⁄2
11⁄4
1
5⁄8
31⁄8
3
3.002
2.998
2.995
2.992
225⁄32
37⁄8
4
11⁄4
1
5⁄8
31⁄8
3 1⁄4
3.252
3.248
3.245
3.242
51⁄32
41⁄8
41⁄4
11⁄4
1
5⁄8
31⁄8
3 1⁄2
3.502
3.498
3.495
3.492
57⁄16
43⁄8
41⁄2
13⁄8
11⁄8
3⁄4
37⁄8
4
4.002
3.998
3.995
3.992
67⁄16
53⁄8
51⁄2
13⁄8
11⁄8
3⁄4
37⁄8

Waaodruff Keyway Design Dimensional Data for Tapered Shaft

Nom.
Dia.
Dt
Thds. per
Inch
Keyway
Square Key
A
B
C
W
H
Max.
Min.
Max.
Min.
Max.
Min.
1⁄4
#10
40
0.0625
.0615
.037
.033
0.0635
0.0625
1⁄2
3⁄16
5⁄64
3⁄8
5⁄16
32
0.0937
.0927
.053
.049
0.0947
0.0937
11⁄16
1⁄4
5⁄64
1⁄2
5⁄16
32
0.1250
.1240
.069
.065
0.1260
0.1250
7⁄8
3⁄8
5⁄64
5⁄8
1⁄2
28
0.1562
.1552
.084
.080
0.1572
0.1562
11⁄16
3⁄8
1⁄8
3⁄4
1⁄2
28
0.1875
.1865
.100
.096
0.1885
0.1875
11⁄4
5⁄8
1⁄8
7⁄8
5⁄8
24
0.2500
.2490
.131
.127
0.2510
0.2500
11⁄2
3⁄4
5⁄32
1
3⁄4
20
0.2500
.2490
.131
.127
0.2510
0.2500
13⁄4
7⁄8
5⁄32
1 1⁄8
7⁄8
20
0.3125
.3115
.162
.158
0.3135
0.3125
2
7⁄8
5⁄32
1 1⁄4
1
20
0.3125
.3115
.162
.158
0.3135
0.3125
21⁄8
7⁄8
5⁄32
1 3⁄8
1
20
0.3750
.3740
.194
.190
0.3760
0.3750
21⁄4
1
5⁄32
1 1⁄2
1
20
0.3750
.3740
.194
.190
0.3760
0.3750
21⁄2
1
5⁄32
1 5⁄8
1 1⁄4
18
0.4375
.4365
.225
.221
0.4385
0.4375
2 3⁄4
1 1⁄4
5⁄32
1 3⁄4
1 1⁄4
18
0.4375
.4365
.225
.221
0.4385
0.4375
3
1 1⁄4
5⁄32
1 7⁄8
1 1⁄4
18
0.4375
.4365
.225
.221
0.4385
0.4375
3 1⁄8
1 1⁄4
5⁄32
2
1 1⁄4
18
0.5000
.4990
.256
.252
0.5010
0.5000
3 1⁄4
1 1⁄2
5⁄32
2 1⁄4
1 1⁄2
18
0.5625
.5610
.287
.283
0.5640
0.5625
3 1⁄2
1 1⁄2
5⁄32
2 1⁄2
2
16
0.6250
.6235
.319
.315
0.6265
0.6250
4
1 3⁄4
7⁄32
2 3⁄4
2
16
0.6875
.6860
.350
.346
0.6890
0.6875
4 3⁄8
1 3⁄4
7⁄32
3
2
16
0.7500
.7485
.381
.377
0.7515
0.7500
4 3⁄4
2
7⁄32
3 1⁄4
2
16
0.7500
.7485
.381
.377
0.7515
0.7500
5
2 1⁄8
7⁄32
3 1⁄2
2 1⁄2
16
0.8750
.8735
.444
.440
0.8765
0.8750
5 1⁄2
2 1⁄4
9⁄32
4
2 1⁄2
16
1.0000
.9985
.506
.502
1.0015
1.0000
6 1⁄4
2 3⁄4
9⁄32

All dimensions in inches except where otherwise noted.

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