Inch and Metric Size, Nylon Plastic
Hollow Knurled Knobs
With Zinc Plated Steel Threaded Stud
GN 421
GN 421

RoHS Compliant

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GN 421
Specification
Information
Knob body: Black nylon plastic, smooth, glossy finish
Threaded stud: Zinc plated steel, molded-in

On clamping operations, the partially protruding steel hub prevents chipping of the plastic.
Maximum heat resistance of nylon plastic: 110°C (230°F).
For certain minimum quantities, other colors are available upon request.
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Inch Table

Dimensions in:

inches
(millimeters)

Part
Number
d4
d1
Thread
l
Stud Length
d2
d3
h
k
.75
(19)
10-32
.375
.38
(10)
.47
(12)
.54
(14)
.31
(8)
.500
.750
.94
(24)
1/4-20
.500
.47
(12)
.55
(14)
.65
(16.5)
.37
(9.5)
.750
1.00
1.18
(30)
5/16-18
.500
.55
(14)
.63
(16)
.77
(19.5)
.43
(11)
.750
1.00
 
Metric Table

Dimensions in:

millimeters
(inches)

Part
Number
d4
d1
Thread
l
Stud Length
d2
d3
h
k
19
(.75)
M4 x .7
10
9
(.35)
12
(.47)
14
(.55)
8
(.31)
15
20
30
19
(.75)
M5 x .8
10
9
(.35)
12
(.47)
14
(.55)
8
(.31)
15
20
25
24
(.94)
M6 x 1.0
10
11
(.43)
14
(.55)
16.5
(.65)
9.5
(.37)
16
20
25
30
30
(1.18)
M8 x 1.25
16
13
(.51)
16
(.63)
19.5
(.77)
11
(.43)
20
25
30
40
36
(1.42)
M10 x 1.5
20
15
(.59)
18
(.71)
22.5
(.89)
12.5
(.49)
25
30
45