Trapezoidal Screw Specifications

Trapezoidal Screw Specifications

Diameter x
lead
d 1
Major dia.
tolerance 4 h
d 2
Effective or pitch dia.
tolerance 7 e
d 3
Minor dia.
tolerance 7 h
Thread
starts
Lead
angle
(1)
Efficiency
(2)
H 1
(mm)
I
Moment
of inertia
(mm4)
min.
max.
min. max. min. max. ƒ=0.1.  ƒ=0.2
(mm)
(mm)
(mm)
Tr 10 x 2
Tr 10 x 3
Tr 10 x 4 (P2)
Tr 12 x 3
Tr 12 x 6 (P3)
Tr 14 x 3
Tr 14 x 4
Tr 14 x 6 (P3)
9.820
9.764
9.820
11.764
11.764
13.764
13.700
13.764
10.000
10.000
10.000
12.000
12.000
14.000
14.000
14.000
8.739
8.203
8.739
10.191
10.191
12.191
11.640
12.191
8.929
8.415
8.929
10.415
10.415
12.415
11.905
12.415
7.191
6.150
7.191
8.135
8.135
10.135
9.074
10.135
7.500
6.500
7.500
8.500
8.500
10.500
9.500
10.500
1
1
2
1
2
1
1
2
4°02’
6°25’
8°03’
5°12’
10°19’
4°22’
6°03’
8°41’
0.41
0.52
0.58
0.47
0.63
0.43
0.51
0.59
0.26
0.35
0.40
0.31
0.46
0.27
0.34
0.42
1.0
1.5
1.0
1.5
1.5
1.5
2.0
1.5
131
70
131
215
215
518
333
518
Tr 16 x 4
Tr 16 x 8 (P4)
Tr 18 x 4
Tr 18 x 8 (P4)
Tr 20 x 4
Tr 20 x 8 (P4)
Tr 20 x 20 (P5)
15.700
15.700
17.700
17.700
19.700
19.700
19.665
16.000
16.000
18.000
18.000
20.000
20.000
20.000
13.640
13.640
15.640
15.640
17.640
17.640
17.114
13.905
13.905
15.905
15.905
17.905
17.905
17.394
11.074
11.074
13.074
13.074
15.074
15.074
14.044
14.044
11.500
13.500
13.500
15.500
15.500
14.500
1
2
1
2
1
2
4
5°12’
10°19’
4°33’
9°02’
4°03’
8°03’
20°00’
0.47
0.63
0.44
0.60
0.41
0.58
0.76
0.31
0.46
0.28
0.43
0.26
0.40
0.60
2.0
2.0
2.0
2.0
2.0
2.0
2.5
738
738
1434
1434
2534
2534
1910
Tr 22 x 5
Tr 22 x 10 (P5)
Tr 24 x 5
Tr 24 x 10 (P5)
Tr 25 x 3
Tr 25 x 5
Tr 25 x 10 (P5)
Tr 25 x 25 (P5)
21.665
121.665
23.665
23.665
24.764
24.665
24.665
24.665
22.000
22.000
24.000
24.000
25.000
25.000
25.000
25.000
19.114
19.114
21.094
21.094
23.165
22.094
22.094
22.094
19.394
19.394
21.394
21.394
23.415
22.394
22.394
22.394
16.044
16.044
18.019
18.019
21.103
19.019
19.019
19.019
16.500
16.500
18.500
18.500
21.500
19.500
19.500
19.500
1
2
1
2
1
1
2
5
4°40’
9°16’
4°14’
8°25’
2°20’
4°03’
8°03’
19°30’
0.45
0.61
0.42
0.59
0.29
0.41
0.58
0.75
0.28
0.43
0.27
0.41
0.17
0.26
0.40
0.60
2.5
2.5
2.5
2.5
1.5
2.5
2.5
2.5
3232
3232
5175
5175
9735
6423
6423
6423
Tr 26 x 5
Tr 26 x 10 (P5)
Tr 28 x 5
Tr 28 x 10 (P5)
Tr 30 x 3
Tr 30 x 4
Tr 30 x 5
Tr 30 x 6
Tr 30 x 12 (P6)
Tr 30 x 30 (P5)
21.665
25.665
27.665
29.764
29.700
29.665
29.625
29.625
29.665
26.000
26.000
28.000
28.000
30.000
30.000
30.000
30.000
30.000
30.000
23.094
23.094
25.094
25.094
28.165
27.640
27.094
26.547
26.547
27.094
23.394
23.394
25.394
25.394
28.415
27.905
27.394
26.882
26.882
27.394
20.019
20.019
20.019
20.019
26.103
25.074
24.019
22.463
22.463
24.019
20.500
20.500
22.500
22.500
26.500
25.500
24.500
23.000
23.000
24.500
1
2
1
2
1
1
1
1
2
6
3°52’
7°42’
3°34’
7°07’
1°55’
2°36’
3°19’
4°03’
8°03’
19°09’
0.40
0.57
0.38
0.55
0.25
0.31
0.36
0.41
0.58
0.75
0.25
0.39
0.23
0.37
0.14
0.18
0.22
0.26
0.40
0.59
2.5
2.5
2.5
2.5
1.5
2.0
2.5
3.0
3.0
2.5
7884
7884
11539
11539
22900
19400
16340
13650
13650
16340
Tr 32 x 6
Tr 32 x 12 (P6)
Tr 35 x 3
Tr 35 x 4
Tr 35 x 5
Tr 35 x 6
Tr 35 x 8
Tr 36 x 6
Tr 36 x 12 (P6)
31.625
31.625
34.764
34.700
34.665
34.625
34.550
35.625
35.625
32.000
32.000
35.000
35.000
35.000
35.000
35.000
36.000
36.000
28.547
28.547
33.165
32.640
32.094
31.547
30.493
32.547
32.547
28.882
28.882
33.415
32.905
32.394
31.882
30.868
32.882
32.882
24.463
24.463
31.103
30.074
29.019
27.463
25.399
28.463
28.463
25.000
25.000
31.500
30.500
29.500
28.000
26.000
29.000
29.000
1
2
1
1
1
1
1
1
2
3°46’
7°30’
1°38’
2°13’
2°48’
3°25’
4°42’
3°19’
6°36’
0.39
0.56
0.22
0.28
0.33
0.37
0.45
0.36
0.53
0.24
0.38
0.12
0.16
0.19
0.23
0.29
0.22
0.36
3.0
3.0
1.5
2.0
2.5
3.0
4.0
3.0
3.0
17580
17580
46128
40150
34810
30000
21980
34540
34540

(1) Useful effect for conversion of rotary movement to linear movement with friction coefficient ƒ =0.1 and ƒ =0.2.
(2) Radial support dimension between screw and nut teeth