ANSI B92.1-1970
MAXIMUM TOLERANCE FOR SPACE WIDTH AND
TOOTH THICKNESS OF TOLERANCE
CLASS 5 SPLINES
P/Ps
2.5/5
and 3/6
4/8and
5/10
6/12
and 8/16
10/20
and 12/24
16/32
and 20/40
24/48
and 48/96
64/128
and 48/96
128/256
N
Machining
Tolerances, m
10
20
30
40
15.8
17.6
18.4
21.8
14.5
16.0
17.5
19.0
12.5
14.0
15.5
17.0
12.0
13.0
14.0
15.0
11.7
12.4
13.1
13.8
11.7
12.4
13.1
13.8
9.6
10.2
10.8
11.4
9.5
10.0
10.5
-
50
60
70
80
23.0
24.8
-
-
20.5
22.0
-
-
18.5
20.0
-
-
16.0
17.0
18.0
19.0
14.5
15.2
15.9
16.6
14.5
15.2
15.9
16.6
-
-
-
-
-
-
-
-
90
100
-
-
-
-
-
-
20.0
21.0
17.3
18.0
17.3
18.0
-
-
-
-
N
Variation
Allowance, Y
10
20
30
40
23.5
27.0
30.5
34.0
20.3
22.6
24.9
27.2
17.0
19.0
21.0
23.0
15.7
17.4
19.1
21.6
14.2
15.4
16.6
17.8
12.2
13.4
14.6
15.8
11.0
12.0
13.0
14.0
9.8
10.6
11.4
-
50
60
70
80
37.5
41.0
-
-
29.5
31.8
-
-
25.0
27.0
-
-
22.5
24.2
25.9
27.6
19.0
20.2
21.4
22.6
17.0
18.2
19.4
20.6
-
-
-
-
-
-
-
-
90
100
-
-
-
-
-
-
29.3
31.0
23.8
25.0
21.8
23.0
-
-
-
-
N
Total
Index Variation
10
20
30
40
20
24
28
32
17
20
22
25
15
18
20
22
15
17
19
20
14
15
16
18
12
13
15
16
11
12
14
15
10
11
13
-
50
60
70
80
36
40
-
-
27
30
-
-
25
27
-
-
22
24
26
28
19
20
21
22
17
18
20
21
-
-
-
-
-
-
-
-
90
100
-
-
-
-
-
-
29
31
24
25
23
24
-
-
-
-
N
Profile
Variation
ALL
7
-10
6
-8
5
-7
4
-6
3
-5
2
-4
2
-4
2
-4
For other tolerances classes:
Class 4 = 0.71 x Tabulated value
Class 5 = 0.00 x Tabulated value
Class 6 = 1.40 x Tabulated value
Class 7 = 2.00 x Tabulated value
