Inch and Metric Size, Steel
Indexing Plungers with Multiple Pin Lengths
Threaded Body, Lock-out Type
GN 817



RoHS Compliant
 

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Specification
Information

Threaded body: Steel, black oxide finish  
Plunger pin: Steel, hardened and ground
Knob:Matte black technopolymer plastic (Polyamide PA), not removable
Lock nut: Steel, black oxide finish, DIN 439 / ISO 4035


GN 817 indexing plungers offer the following advantages: 
--Two retracting strokes l1 per plunger diameter 
--When plunger is retracted the mechanism is partly shrouded
--Defined thread length by an undercut at the end of the thread
Used in applications where the plunger must not protrude continually. To achieve this, the knob is rotated by 90° after being retracted. The head of the plunger body is provided with a suitable notch in opposite positions so as to prevent the plunger from accidentally slipping back into its forward position due to error or vibration.
This indexing plunger has the unique feature of the pull knob partially enclosing the top of the plunger body, allowing less debris to enter into the mechanism.
Maximum heat resistance of nylon plastic hand knob: 110°C (230°F).

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Inch Size Table

Dimensions in:

inches
(millimeters)

Part Number
d1
-0.02mm
-0.04mm
l1
min.
d2
Thread
d3
l3
l2
l4
A/F
Spring Load Lbs.
Without
Lock Nut
With
Lock Nut
Initial
End
.16
(4)
.16
(4)
5/16-18
.63
(16)
.63
(16)
1.38
(35)
.20
(5)
.39
(10)
.9
2.7
.16
(4)
.24
(6)
5/16-18
.63
(16)
.63
(16)
1.38
(35)
.20
(5)
.39
(10)
.9
2.8
.20
(5)
.20
(5)
3/8-16
.75
(19)
.71
(18)
1.57
(40)
.24
(6)
.47
(12)
1.1
3.4
.20
(5)
.31
(8)
3/8-16
.75
(19)
.71
(18)
1.57
(40)
.24
(6)
.47
(12)
1.1
4.1
.24
(6)
.24
(6)
1/2-13
.91
(23)
.87
(22)
1.89
(48)
.24
(6)
.55
(14)
1.4
4.3
.24
(6)
.35
(9)
1/2-13
.91
(23)
.87
(22)
1.89
(48)
.24
(6)
.55
(14)
1.4
5.6
.31
(8)
.31
(8)
5/8-11
1.10
(28)
1.02
(26)
2.28
(58)
.31
(8)
.67
(17)
1.9
5.9
.31
(8)
.47
(12)
5/8-11
1.10
(28)
1.02
(26)
2.28
(58)
.31
(8)
.67
(17)
1.9
6.3
.39
(10)
.47
(12)
5/8-11
1.10
(28)
1.02
(26)
2.28
(58)
.31
(8)
.67
(17)
2.1
8.5
Metric Size Table

Dimensions in:

millimeters
(inches)

Part Number
d1
-0.02mm
-0.04mm
l1
min.
d2
Thread
d3
l3
l2
l4
A/F
Spring Load N
Without
Lock Nut
With
Lock Nut
Initial
End
4
(.16)
4
(.16)
M8 x 1.0
16
(.63)
16
(.63)
35
(1.38)
5
(.20)
10
(.39)
4
12
4
(.16)
6
(.24)
M8 x 1.0
16
(.63)
16
(.63)
35
(1.38)
5
(.20)
10
(.39)
4
12.5
5
(.20)
5
(.20)
M10 x 1.0
19
(.75)
18
(.71)
40
(1.57)
6
(.24)
12
(.47)
5
15
5
(.20)
8
(.31)
M10 x 1.0
19
(.75)
18
(.71)
40
(1.57)
6
(.24)
12
(.47)
5
16
6
(.24)
6
(.24)
M12 x 1.5
23
(.91)
22
(.87)
48
(1.89)
6
(.24)
14
(.55)
6
19
6
(.24)
9
(.35)
M12 x 1.5
23
(.91)
22
(.87)
48
(1.89)
6
(.24)
14
(.55)
6
25
8
(.31)
8
(.31)
M16 x 1.5
28
(1.10)
26
(1.02)
58
(2.28)
8
(.31)
17
(.67)
8.5
26
8
(.31)
12
(.47)
M16 x 1.5
28
(1.10)
26
(1.02)
58
(2.28)
8
(.31)
17
(.67)
8.5
28
10
(.39)
12
(.47)
M16 x 1.5
28
(1.10)
26
(1.02)
58
(2.28)
8
(.31)
17
(.67)
9.5
38