GN 3663Torque Limiting Knurled Knobs / Knob Screws

Knurled Knobs

GN 3663

Catalogue
d1
d2
d3 H7
d5
d6
h1
h2
t min.
Torque %
in Nm
GN 3663-27-B5-0,7
27
-
B 5
10
19
34
8.5
7
0.7
41
GN 3663-27-B5-1
27
-
B 5
10
19
34
8.5
7
1
40
GN 3663-27-B5-1,5
27
-
B 5
10
19
34
8.5
7
1.5
40
GN 3663-27-B6-0,7
27
-
B 6
10
19
34
8.5
9
0.7
40
GN 3663-27-B6-1
27
-
B 6
10
19
34
8.5
9
1
39
GN 3663-27-B6-1,5
27
-
B 6
10
19
34
8.5
9
1.5
39
GN 3663-34-B5-1
34
-
B 5
10
21
36.5
8.5
7
1
60
GN 3663-34-B5-1,5
34
-
B 5
10
21
36.5
8.5
7
1.5
61
GN 3663-34-B5-2,2
34
-
B 5
10
21
36.5
8.5
7
2.2
62
GN 3663-34-B6-1
34
-
B 6
10
21
36.5
8.5
9
1
59
GN 3663-34-B6-1,5
34
-
B 6
10
21
36.5
8.5
9
1.5
60
GN 3663-34-B6-2,2
34
-
B 6
10
21
36.5
8.5
9
2.2
61
GN 3663-42-B6-2
42
-
B 6
13.5
27
43
11
11
2
108
GN 3663-42-B6-2,5
42
-
B 6
13.5
27
43
11
11
2.5
109
GN 3663-42-B6-3,2
42
-
B 6
13.5
27
43
11
11
3.2
110
GN 3663-42-B8-2
42
-
B 8
13.5
27
43
11
11
2
103
GN 3663-42-B8-2,5
42
-
B 8
13.5
27
43
11
11
2.5
104
GN 3663-42-B8-3,2
42
-
B 8
13.5
27
43
11
11
3.2
105
GN 3663-52-B10-2,5
52
-
B 10
19
32
54
15.5
17
2.5
215
GN 3663-52-B10-3
52
-
B 10
19
32
54
15.5
17
3
210
GN 3663-52-B10-4
52
-
B 10
19
32
54
15.5
17
4
210
GN 3663-52-B12-2,5
52
-
B 12
19
32
54
15.5
17
2.5
209
GN 3663-52-B12-3
52
-
B 12
19
32
54
15.5
17
3
204
GN 3663-52-B12-4
52
-
B 12
19
32
54
15.5
17
4
204
GN 3663-62-B10-3
62
-
B 10
19
33
54
15.5
17
3
241
GN 3663-62-B10-4
62
-
B 10
19
33
54
15.5
17
4
242
GN 3663-62-B10-5,5
62
-
B 10
19
33
54
15.5
17
5.5
243
GN 3663-62-B12-3
62
-
B 12
19
33
54
15.5
17
3
235
GN 3663-62-B12-4
62
-
B 12
19
33
54
15.5
17
4
236
GN 3663-62-B12-5,5
62
-
B 12
19
33
54
15.5
17
5.5
237
GN 3663-27-M3-0,7
27
M 3
-
10
19
34
8.5
7
0.7
41
GN 3663-27-M3-1
27
M 3
-
10
19
34
8.5
7
1
40
GN 3663-27-M3-1,5
27
M 3
-
10
19
34
8.5
7
1.5
40
GN 3663-27-M4-0,7
27
M 4
-
10
19
34
8.5
9
0.7
42
GN 3663-27-M4-1
27
M 4
-
10
19
34
8.5
9
1
41
GN 3663-27-M4-1,5
27
M 4
-
10
19
34
8.5
9
1.5
41
GN 3663-27-M5-0,7
27
M 5
-
10
19
34
8.5
9
0.7
41
GN 3663-27-M5-1
27
M 5
-
10
19
34
8.5
9
1
40
GN 3663-27-M5-1,5
27
M 5
-
10
19
34
8.5
9
1.5
40
GN 3663-27-M6-0,7
27
M 6
-
10
19
34
8.5
9
0.7
40
GN 3663-27-M6-1
27
M 6
-
10
19
34
8.5
9
1
39
GN 3663-27-M6-1,5
27
M 6
-
10
19
34
8.5
9
1.5
39
GN 3663-34-M3-1
34
M 3
-
10
21
36.5
8.5
7
1
61
GN 3663-34-M3-1,5
34
M 3
-
10
21
36.5
8.5
7
1.5
61
GN 3663-34-M3-2,2
34
M 3
-
10
21
36.5
8.5
7
2.2
62
GN 3663-34-M4-1
34
M 4
-
10
21
36.5
8.5
9
1
61
GN 3663-34-M4-1,5
34
M 4
-
10
21
36.5
8.5
9
1.5
62
GN 3663-34-M4-2,2
34
M 4
-
10
21
36.5
8.5
9
2.2
63
GN 3663-34-M5-1
34
M 5
-
10
21
36.5
8.5
9
1
60
GN 3663-34-M5-1,5
34
M 5
-
10
21
36.5
8.5
9
1.5
61
GN 3663-34-M5-2,2
34
M 5
-
10
21
36.5
8.5
9
2.2
62
GN 3663-34-M6-1
34
M 6
-
10
21
36.5
8.5
9
1
59
GN 3663-34-M6-1,5
34
M 6
-
10
21
36.5
8.5
9
1.5
60
GN 3663-34-M6-2,2
34
M 6
-
10
21
36.5
8.5
9
2.2
61
GN 3663-42-M6-2
42
M 6
-
13.5
27
43
11
11
2
108
GN 3663-42-M6-2,5
42
M 6
-
13.5
27
43
11
11
2.5
109
GN 3663-42-M6-3,2
42
M 6
-
13.5
27
43
11
11
3.2
110
GN 3663-42-M8-2
42
M 8
-
13.5
27
43
11
11
2
106
GN 3663-42-M8-2,5
42
M 8
-
13.5
27
43
11
11
2.5
107
GN 3663-42-M8-3,2
42
M 8
-
13.5
27
43
11
11
3.2
108
GN 3663-52-M10-2,5
52
M 10
-
19
32
54
15.5
17
2.5
214
GN 3663-52-M10-3
52
M 10
-
19
32
54
15.5
17
3
209
GN 3663-52-M10-4
52
M 10
-
19
32
54
15.5
17
4
209
GN 3663-52-M12-2,5
52
M 12
-
19
32
54
15.5
17
2.5
209
GN 3663-52-M12-3
52
M 12
-
19
32
54
15.5
17
3
204
GN 3663-52-M12-4
52
M 12
-
19
32
54
15.5
17
4
204
GN 3663-62-M10-3
62
M 10
-
19
33
54
15.5
17
3
240
GN 3663-62-M10-4
62
M 10
-
19
33
54
15.5
17
4
241
GN 3663-62-M10-5,5
62
M 10
-
19
33
54
15.5
17
5.5
242
GN 3663-62-M12-3
62
M 12
-
19
33
54
15.5
17
3
235
GN 3663-62-M12-4
62
M 12
-
19
33
54
15.5
17
4
236
GN 3663-62-M12-5,5
62
M 12
-
19
33
54
15.5
17
5.5
237

Knob

Aluminum

Black anodized

Torque mechanism

Steel, hardened

Other parts

Steel, blackened

Cover cap

Plastic, light gray

Torque knurled knobs / knob screws GN 3663 are used when the manually applied torque is to be limited.

When turned clockwise, the torque mechanical system of the knurled knob triggers an „over-engagement“ as soon as the specified torque is reached. When turning counterclockwise, the mechanical system locks such that the torque is not limited. For example, when tightening, this will ensure that the maximum permissible torque is not exceeded. On the other hand, the torque necessary for releasing will always be transferred reliably.

  • Other dimensions of bore inserts, threaded inserts or threaded studs analog GN 300 
  • Other inserts with special threaded studs analog GN 306 
  • Other torques
  • Torque limiting turning counterclockwise or turning counterclockwise and clockwise
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