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Locational Clearance Limits and Fits For Cylindrical Parts
[(ANSI B4.1-1967,R1987)][Table LC6-LC11]


All limits shown in chart below are in thousandths of an inches. Symbols H6,H7,s6, etc.. are Shaft and Hole designations used in American-British-Canadian System (ABC). Limits for Shaft and Hole are applied algebraically to the Nominal (basic) size to obtain the limits of the size for the parts. All data given in bold in the chart below are in accordance with ABC agreements. The values given under the "Clearance Limits Column" represent min and max amounts of clearance resulting from application of standard tolerance limits.


VALUES SHOWN BELOW ARE IN THOUSANDTHS OF AN INCHES
Nominal (Basic) Size
Ranges (Inches)
Class LC6Class LC7Class LC8 Class LC9Class LC10Class LC11
C
l
e
a
r
a
n
c
e
Limits
Standard Tolerance Limits C
l
e
a
r
a
n
c
e
Limits
Standard Tolerance Limits C
l
e
a
r
a
n
c
e
Limits
Standard Tolerance Limits C
l
e
a
r
a
n
c
e
Limits
Standard Tolerance Limits C
l
e
a
r
a
n
c
e
Limits
Standard Tolerance Limits C
l
e
a
r
a
n
c
e
Limits
Standard Tolerance Limits
OverToHole
H9
Shaft
f8
Hole
H10
Shaft
e9
Hole
H10
Shaft
d9
Hole
H11
Shaft
c10
Hole
H12
Shaft
Hole
H13
Shaft
00.120.
1.9
+1.0
0
-0.3
-0.9
0.6
3.2
+1.6
0
-0.6
-1.6
1.0
2.0
+1.6
0
-1.0
-2.0
2.5
6.6
+2.5
0
-2.5
-4.1
4
12
+4
0
-4
-8
5
17
+6
0
-5
-11
0.120.240.4
2.3
+1.2
0
-0.4
-1.1
0.8
3.8
+1.8
0
-0.8
-2.0
1.2
4.2
+1.8
0
-1.2
-2.4
2.8
7.6
+3.0
0
-2.8
-4.6
4.5
14.5
+5
0
-4.5
-9.5
6
20
+7
0
-6
-13
0.240.400.5
2.8
+1.4
0
-0.5
-1.4
1.0
4.6
+2.2
0
-1.0
-2.4
1.6
5.2
+2.2
0
-1.6
-3.0
3.0
8.7
+3.5
0
-3.0
-5.2
5
17
+6
0
-5
-11
7
25
+9
0
-7
-16
0.400.710.6
3.2
+1.6
0
-0.6
-1.6
1.2
5.6
+2.8
0
-1.2
-2.8
2.0
6.4
+2.8
0
-2.0
-3.6
3.5
10.3
+4.0
0
-3.5
-6.3
6
20
+7
0
-6
-13
8
28
+10
0
-8
-18
0.711.190.8
4.0
+2.0
0
-0.8
-2.0
1.6
7.1
+3.5
0
-1.6
-3.6
2.5
8.0
+3.5
0
-2.5
-4.5
4.5
13.
+5.0
0
-4.5
-8.0
7
23
+8
0
-7
-15
10
34
+12
0
-10
-22
1.191.971.0
5.1
+2.5
0
-1.0
-2.6
2.0
8.5
+4.0
0
-2.0
-4.5
3.6
9.5
+4.0
0
-3.0
-5.5
5.0
15.0
+6.0
0
-5.0
-9.0
8
28
+10
0
-8
-18
12
44
+16
0
-12
-28
1.973.151.2
6.0
+3.0
0
-1.0
-3.0
2.5
10.0
+4.5
0
-2.5
-5.5
4.0
11.5
+4.5
0
-4.0
-7.0
6.0
17.5
+7
0
-6
-10.5
10
34
+12
0
-10
-22
14
50
+18
0
-14
-32
3.154.731.4
7.1
+3.5
0
-1.4
-3.6
3.0
11.5
+5.0
0
-3.0
-6.5
5.0
13.5
-5.0
0
-5.0
-8.5
7
21
+9
0
-7
-12
11
39
+14.
0
-11
-25
16
60
+22
0
-16
-38
4.737.091.6
8.1
+4.0
0
-1.6
-4.1
3.5
13.5
+6.0
0
-3.0
-7.5
6
16
+6
0
-6
-10
8
24
+10
0
-8
-14
12
44
+16
0
-12
-28
18
68
+25
0
-18
-43
7.099.852.0
9.3
+4.5
0
-2.0
-4.8
4.0
15.5
+7
0
-4.0
-8.5
7
18.5
+7
0
-7
-11.5
10
29
+12
0
-10
-17
16
52
+18
0
-16
-34
22
78
+28
0
-22
-50
9.8512.412.2
10.2
+5.0
0
-2.2
-5.2
4.5
17.5
+8.0
0
-4.5
-9.5
7
20
-8
0
-7
-12
12
32
+12
0
-12
-20
20
60
+20
0
-20
-40
28
88
+30
0
-28
-58
12.4115.752.5
12.0
+6.0
0
-2.5
-6.0
5.0
20.0
+9.0
0
-5
-11
8
23
+9
0
-8
-14
14
37
+14
0
-14
-23
22
66
+22
0
-22
-44
30
100
+35
0
-30
-65
15.7519.692.8
12.8
+6.0
0
-2.8
-6.8
5.0
21.0
+10.0
0
-5
-11
9
25
+10
0
-9
-15
16
42
+16
0
-16
-26
25
75
+25
0
-25
-50
35
115
+40
0
-35
-75
19.6930.093.0
16.0
+8.0
0
-3.0
-8.0
6.0
26.0
+12.0
0
-6
-14
10
30
+12
0
-10
-18
18
50
+20
0
-18
-30
28
88
+30
0
-28
-58
40
140
+50
0
-40
-90
30.0941.493.5
19.5
+10.0
0
-3.5
-9.5
7
33
+16.0
0
-7
-17
12
38
+16
0
-12
-22
20
61
+25
0
-20
-36
30
110
+40
0
-30
-70
45
165
+60
0
-45
-105
41.4956.194.0
24.0
+12.0
0
-4.0
-12.0
8.0
40.0
+20.0
0
-8
-20
14
46
+20
0
-14
-26
25
75
+30
0
-25
-45
40
140
+50
0
-40
-90
60
220
+80
0
-60
-140
56.1976.394.5
30.5
+16.0
0
-4.5
-14.5
9.0
50.0;
+25.0
0
-9
-25
16
57
+25
0
-16
-32
30
95
+40
0
-30
-55
50
170
+60
0
-50
-110
70
270
+100
0
-70
-170
76.39100.95.0
37.0
+20.0
0
-5
-17
10.0
60.0
+30.0
0
-10
-30
18
68
+30
0
-18
-38
35
115
+50
0
-35
-65
50
210
+80
0
-50
-130
80
330
+125
0
-80
-205
100.9131.96.0
47.0
+25.0
0
-6
-22
12.0
67.0
+40.0
0
-12
-27
20
85
+40.0
0
-20
-45
40
140
+60
0
-40
-80
60
260
+100
0
-60
-160
90
410
+160
0
-90
-250
131.9171.97.0
57.0
+30.0
-7
-27
14.0
94.0
+50
0
-14
-44
25
105
+50
0
-25
-55
50
180
+80
0
-50
-100
80
330
+125
-80
-205
100
500
+200
0
-100
-300
171.92007.0
72.0
-40.0
0
-7
-32
14.0
114.0
+60.0
0
-14
-54
25
125
+60
0
-25
-65
50
210
+100
0
-50
-110
90
410
+160
0
-90
-250
125
625
+250
0
-125
-375

b-) Locational Transition Fits [LT]:These fits lie between clearance and interference. Locational interference fits are for application where accuracy of location in important. But for these kind of fits either small amount of clearance or interference is permissible. fits These fits are a compromise between LC and LN (interference/force) fits. These fits would allow either a small amount of clearance or interference. LT1, LT2 can be usable for bearing bushings, hubs of gears, pulleys and bushings, retaining rings, etc. The parts can be assembled or disassembled manually. LT3, LT4 can be usable clutches, pulleys, manual wheels, brake disks, etc. The parts can be assembled or disassembled without any great force by using a rubber hammer. LT5, LT6 can be usable for armatures of electric motors on shafts, driven bushings, gear rims, flushed bolts, etc. The parts can be assembled using low pressing forces. SHAFT "j7" with Hole "H8" provides a transition fit averaging a slight clearance and is recommended for location fits requiring slightly less clearance than is given with "h" shaft and where a slight interference is permissible. Typical applications are coupling spigot and recesses, gear rings clamped t steel hubs, etc. SHAFT "k6" with Hole "H7" is a true transition fit averaging virtually no clearance , and is recommended for location fits where a slight interference can be tolerated for the purpose of eliminating vibration.


Graphical Representation of ANSI B4.1-1967 Locational Transition Fits Table




Locational Transition Limits and Fits For Cylindrical Parts [(ANSI B4.1-1967,R1987)]


All limits shown in chart below are in thousandths of an inches. Symbols H7,js6, etc. are Shaft and Hole designations used in American-British-Canadian System (ABC). Limits for Shaft and Hole are applied algebraically to the Nominal (basic) size to obtain the limits of the size for the parts. All data given in bold in the chart below are in accordance with ABC agreements. The values given under the "Clearance Limits Column" represent min and max amounts of clearance resulting from application of standard tolerance limits.


VALUES SHOWN BELOW ARE IN THOUSANDTHS OF AN INCHES
Nominal (Basic) Size
Ranges (Inches)
Class LT1Class LT2Class LT3 Class LT4Class LT5Class LT6
FitStandard Tolerance Limits FitStandard Tolerance Limits FitStandard Tolerance Limits FitStandard Tolerance Limits FitStandard Tolerance Limits FitStandard Tolerance Limits
OverToHole
H7
Shaft
js6
Hole
H8
Shaft
js7
Hole
H7
Shaft
k6
Hole
H8
Shaft
k7
Hole
H7
Shaft
n6
Hole
H7
Shaft
n7
00.12-0.10
+0.50
+0.4
0
-0.10
+0.10
-0.2
+0.8
+0.6
0
+0.2
-0.2
-0.5
+0.15
+0.4
0
+0.5
+0.25
-0.65
+0.15
+0.4
0
-0.65
+0.25
0.120.24-0.15
+0.65
+0.5
0
+0.15
-0.15
-0.25
+0.95
+0.7
0
+0.25
-0.25
-0.6
+0.2
+0.5
0
+0.6
+0.3
-0.8
+0.2
+0.5
0
+0.8
+0.3
0.240.40-0.2
+0.8
+0.6
0
+0.2
-0.2
-0.3
+1.2
+0.9
0
+0.3
-0.3
-0.5
+0.5
+0.6
0
+0.5
+0.1
-0.7
+0.8
+0.9
0
+0.7
+0.1
-0.8
+0.2
+0.6
0
+0.8
+0.4
-1.0
+0.2
+0.6
0
+1.0
+0.4
0.400.71-0.2
+0.9
+0.7
0
+0.2
-0.2
-0.35
+1.35
+1.0
0
+0.35
-0.35
-0.5
+0.6
+0.7
0
+0.5
+0.1
-0.8
+0.9
+1.0
+0.8
+0.1
-0.9
+0.2
+0.7
0
+0.9
+0.5
-1.2
+0.2
+0.7
0
+1.2
+0.5
0.711.19-0.25
+1.05
+0.8
0
+0.25
-0.25
-0.4
+1.6
+1.2
0
+0.4
-0.4
-0.6
+0.7
+0.8
0
+0.6
+0.1
-0.9
+1.1
+1.2
0
+0.9
+0.1
-1.1
+0.2
+0.8
0
+1.1
+0.6
-1.4
+0.2
+0.8
0
+1.4
+0.6
1.191.97-0.3
+1.3
+1.0
0
+0.3
-0.3
-0.5
+2.1
+1.6
0
+0.5
-0.5
-0.7
+0.9
+1.0
0
+0.7
+0.1
-1.1
+1.5
+1.6
0
+1.1
0
-1.3
+0.3
+1.0
0
+1.3
+0.7
-1.7
+0.3
+1.0
0
+1.7
+0.7
1.973.15-0.3
+1.5
+1.2
0
+0.3
-0.3
-0.6
+2.4
+1.8
0
+0.6
-0.6
-0.8
+1.1
+1.2
0
+0.8
+0.1
-1.3
+1.7
+1.8
0
+1.3
+0.1
-1.5
+0.4
+1.2
0
+1.5
+0.8
-2.0
+0.4
+1.2
0
+2.0
+0.8
3.154.73-0.4
+1.8
+1.4
0
+0.4
-0.4
-0.7
+2.9
+2.2
0
+0.7
-0.7
-1.0
+1.3
+1.4
0
+1.0
+0.1
-1.5
+2.1
+2.2
0
+1.5
+0.1
-1.9
+0.4
+1.4
0
+1.9
+1.0
-2.4
+0.4
+1.4
0
+2.4
+1.0
4.737.09-0.5
+2.1
+1.6
0
+0.5
-0.5
-0.8
+3.3
+2.5
0
+0.8
-0.8
-1.1
+1.5
+1.6
0
+1.1
+0.1
-1.7
+2.4
+2.5
0
+1.7
+0.1
-2.2
+0.4
+1.6
0
+2.2
+1.2
-2.8
+0.4
+1.6
0
+2.8
+1.2
7.099.85-0.6
+2.4
+1.8
0
+0.6
-0.6
-0.9
+3.7
+2.8
0
-0.9
+0.9
-1.4
+1.6
+1.8
0
+1.4
+0.2
-2.0
+2.6
+2.8
0
+2.0
+0.2
-2.6
+0.4
+1.8
0
+2.6
+1.4
-3.2
+0.4
+1.8
0
+3.2
+1.4
9.8512.41-0.6
+2.6
+2.0
0
+0.6
-0.6
-1.0
+4.0
+3.0
0
-1.0
+1.0
-1.4
+1.
8
+2.0
0
+1.4
+0.2
-2.0
+2.
8
+3.0
0
+2.2
+0.2
-2.6
+0.6
+2.0
0
+2.6
+1.4
-3.4
+0.6
+2.0
0
+3.4
+1.4
12.4115.75-0.7
+2.9
+2.2
0
+0.7
-0.7
-1.0
+4.5
+3.5
0
+1.0
-1.0
-1.6
+2.0
+2.2
0
+1.6
+0.2
-2.4
+3.3
+3.5
0
+2.4
+0.2
+-3.0
+0.6
+2.2
0
+3.0
+1.6
-3.8
+0.6
+2.2
0
+3.8
+1.6
15.7519.69-0.8
+3.3
+2.5
0
+0.8
-0.8
-1.2
+5.2
+0.4
0
+1.2
-1.2
-1.8
+2.3
+2.5
0
+1.8
+0.2
-2.7
+3.8
+4.0
0
+2.7
0
-3.4
+0.7
+2.5
0
+3.4
+1.8
-4.3
+0.7
+2.5
0
+4.3
+1.8


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