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Standard T-Nuts per ASME B5.1M table of dimensions and tolerances

ISO Metric Hardware Specification
ANSI Inch Unit Hardware Specifications

American National Standard T-Nuts per. ASME B5.1M Table of dimensions and tolerances, Inch and (metric) mm units

Standard T-Nuts per. ASME B5.1M Table

Nom.
T-Nut
Size
Width
A3
Tap for
Stud E3
Width
B3
inch
mm
inch
mm
inch
mm
inch
mm
max.
min.
UNC-3B
ISO
max.
min
max
min
-
4
-
-
-
-
-
-
-
-
-
5
-
-
-
-
-
-
-
-
0.250
6
-
-
-
-
-
-
-
-
0.312
8
0.330
8.7
0.250-20
M6
0.562
0.531
15
14
0.375
10
0.418
11
0.312-18
M8
0.688
0.656
18
17
0.500
12
0.543
13.5
0.375-16
M10
0.875
0.844
22
21
0.625
16
0.668
17.25
0.500-13
M12
1.125
1.094
28
27
0.750
20
0.783
20.5
0.625-11
M16
1.312
1.281
34
33
1.000
24
1.033
26.5
0.750-10
M20
1.688
1.656
43
42
1.25
30
1.273
33
1.000-8
M24
2.062
2.031
53
52
1.500
36
1.523
39.25
1.250-7
M30
2.500
2.469
64
63
-
42
-
46.75
-
M36
-
-
75
74
-
48
-
52.5
-
M42
-
-
85
84

 

Nom.
T-Nut
Size
Height
C3
Thickness
K3
Length
L3
inch
mm
inch
mm
inch
mm
inch-
mm
max
min
max
min
max
min
max
min
-
4
-
-
-
-
-
-
-
-
-
5
-
-
-
-
-
-
-
-
0.250
6
-
-
-
-
-
-
-
-
0.312
8
0.188
0.172
6
5.6
0.281
9
0.562
18
0.375
10
0.250
0.234
7
6.6
0.375
10.5
0.688
20
0.500
12
0.312
0.297
8
7.6
0.531
12
0.875
23
0.625
16
0.406
0.391
10
9.6
0.625
15
1.125
27
0.750
20
0.531
0.500
14
13.2
0.781
21
1.312
35
1.000
24
0.688
0.656
18
17.2
1.000
27
1.688
46
1.25
30
0.938
0.906
23
22.2
1.312
34
2.062
53
1.500
36
1.188
1.156
28
27.2
1.625
42
2.500
65
-
42
-
-
32
30.5
-
48
-
75
-
48
-
-
36
34.5
-
54
-
85

 

Nom.
T-Nut
Size
Corner Rounds
R3
W3
inch
mm
Inch
max
mm
min

inch
max

mm min
-
4
-
-
-
-
-
5
-
-
-
-
0.250
6
-
-
-
-
0.312
8
0.02
0.5
0.03
0.8
0.375
10
0.02
0.5
0.03
0.8
0.500
12
0.02
0.5
0.06
1.5
0.625
16
0.03
0.8
0.06
1.5
0.750
20
0.03
0.8
0.06
1.5
1.000
24
0.03
0.8
0.06
1.5
1.25
30
0.03
0.8
0.06
1.5
1.500
36
0.03
0.8
0.06
1.5
-
42
-
1
-
2
-
48
-
1
-
2

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