Inch and Metric Size, Technopolymer Plastic
Safety Lobe Knobs
With Steel Threaded Stud

GN 5337.3


RoHS Compliant
 

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Specification
Information

Hand knob: Special glass-fiber reinforced technopolymer plastic, black matte finish    
Threaded insert, screw and spring: Steel, black oxide finish
Molded-in inlay: Zinc die cast

GN 5337.3 safety lobe knobs are best suited for applications where any unintended loosening of the knob may lead to accidents.
In non-operative mode, the lobe knob is not engaged with the threaded stud; i.e., the knob can be turned easily.
Only after axial pushing of the knob does the knob engage with the stud, so that it may be tightened or loosened.
After release, the serrations disengage by means of a spring.
The five lobe design is visually appealing and also gives the operator the means to achieve higher torque.
Temperature resistant to 130°C (355°F).  
Resistant to solvents, oils, grease and other chemical agents.
Versions with stainless steel studs or with colored cover caps available upon request.
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HERE
Inch Table

Dimensions in:

inches
(millimeters)

Part Number d1 d2
Thread
l
Stud Length
d3 d4 d5 h1 h2 h3 h4
3T12CN1K
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1.57
(40)
1/4-20
.47
.53
(13.5)
.71
(18)
.53
(13.5)
1.18
(30)
.55
(14)
.28
(7)
.10
(2.5)
3T16CN1K
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.63
3T20CN1K
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.78
3T25CN1K
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.98
3T32CN1K
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1.26
5T12CN1K
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5/16-18
.47
5T16CN1K
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.63
5T20CN1K
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.78
5T25CN1K
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.98
5T32CN1K
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1.26
5T40CN1K
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1.57
5T45CN1K
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1.77
5T50CN1K
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1.97
5T63CN1K
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2.48
6T16CN1K
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3/8-16
.63
6T20CN1K
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.78
6T25CN1K
Download the CAD 
.98
6T32CN1K
Download the CAD 
1.26
6T40CN1K
Download the CAD 
1.57
6T45CN1K
Download the CAD 
1.77
6T50CN1K
Download the CAD 
1.97
6T63CN1K
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2.48
6T16CN2K
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1.97
(50)
3/8-16
.63
.63
(16)
.87
(22)
.65
(16.5)
1.34
(34)
.59
(15)
.31
(8)
.14
(3.5)
6T20CN2K
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.78
6T25CN2K
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.98
6T32CN2K
Download the CAD 
1.26
6T40CN2K
Download the CAD 
1.57
6T45CN2K
Download the CAD 
1.77
6T50CN2K
Download the CAD 
1.97
6T63CN2K
Download the CAD 
2.48
8T16CN2K
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1/2-13
.63
8T20CN2K
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.78
8T25CN2K
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.98
8T32CN2K
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1.26
8T40CN2K
Download the CAD 
1.57
8T45CN2K
Download the CAD 
1.77
8T50CN2K
Download the CAD 
1.97
Metric Table

Dimensions in:

millimeters
(inches)

Part Number d1 d2
Thread
l
Stud Length
d3 d4 d5 h1 h2 h3 h4
6N12CN1K
Download the CAD 
40
(1.57)
M6 x 1.0 12 13.5
(.53)
18
(.71)
13.5
(.53)
30
(1.18)
14
(.55)
7
(.28)
2.5
(.10)
6N16CN1K
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16
6N20CN1K
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20
6N25CN1K
Download the CAD
25
6N32CN1K
Download the CAD 
32
6N40CN1K
Download the CAD 
40
6N50CN1K
Download the CAD 
50
6N63CN1K
Download the CAD 
63
8N12CN1K
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M8 x 1.25 12
8N16CN1K
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16
8N20CN1K
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20
8N25CN1K
Download the CAD 
25
8N32CN1K
Download the CAD 
32
8N40CN1K
Download the CAD
40
8N45CN1K
Download the CAD 
45
8N50CN1K
Download the CAD 
50
8N63CN1K
Download the CAD 
63
10N16CN1K
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M10 x 1.5 16
10N20CN1K
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20
10N25CN1K
Download the CAD 
25
10N32CN1K
Download the CAD 
32
10N40CN1K
Download the CAD
40
10N45CN1K
Download the CAD 
45
10N50CN1K
Download the CAD 
50
10N63CN1K
Download the CAD 
63
10N80CN1K
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80
8N16CN2K
Download the CAD 
50
(1.97)
M8 x 1.25 16 16
(.63)
22
(.87)
16.5
(.65)
34
(1.34)
15
(.59)
8
(.31)
3.5
(.14)
8N20CN2K
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20
8N25CN2K
Download the CAD 
25
8N32CN2K
Download the CAD 
32
8N40CN2K
Download the CAD
40
8N45CN2K
Download the CAD 
45
8N50CN2K
Download the CAD 
50
8N63CN2K
Download the CAD 
63
8N80CN2K
Download the CAD 
80
10N16CN2K
Download the CAD
M10 x 1.5 16
10N20CN2K
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20
10N25CN2K
Download the CAD 
25
10N32CN2K
Download the CAD 
32
10N40CN2K
Download the CAD 
40
10N45CN2K
Download the CAD
45
10N50CN2K
Download the CAD 
50
10N63CN2K
Download the CAD 
63
10N80CN2K
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80
12N25CN2K
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M12 x 1.75 25
12N32CN2K
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32
12N40CN2K
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40
12N50CN2K
Download the CAD 
50
12N63CN2K
Download the CAD 
63
12N80CN2K
Download the CAD 
80