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"Short" Spring Plungers

Short Spring Plunger

Locking Element
Short Spring Plunger drawing

With Steel or Delrin® Nose
Heavy or Light Spring Pressures

"Short" Spring Plungers With Extended Travel. Click here for sizes.

Steel noses are case hardened for wear resistance without brittleness.

Delrin® noses prevent marring of aluminum, brass or other soft materials.

Bodies are steel with a black oxide finish.

End pressures are given in pounds. Full pressures are the force pounds needed to move the nose the distance shown in "C" columns.

The nylon locking element holds the plunger body securely in place without the need for lock nuts or other devices. We recommend a 90° countersink 1/32" larger than the major diameter of the mating thread to prevent damaging the element.

Plungers may be ordered with or without the locking element. Plungers without element are the same price, but are considered "specials" and cannot be returned. We recommend using without the locking element for applications in aluminum.

To prevent possible spring damage, use of a Northwestern Wrench is recommended when installing from plunger end.

Heavy Spring Pressures — Heat Treated Black Oxide Steel Nose
 "Short" Spring Plungers
With
Lock. Ele.
Part No.
Without
Lock. Ele.
Part No.
Price/ Unit
End Pressure Lbs.
A
B
C
+.000
-.002
D
Net Lbs/ 100
Start
1/2
Full
33100
33100P
$4.18
1.5
3.1
4.75
#8-32
7/16
.052
.070
1/2
33104
33104P
$4.18
1.5
3.1
4.75
#8-36
7/16
.052
.070
1/2
33106
33106P
$3.98
1.75
4.0
6.25
#10-32
15/32
.065
.093
1/2
33110
33110P
$3.98
3.0
6.75
10.5
1/4-20
17/32
.078
.119
1/2
33112
33112P
$4.05
3.75
9.6
15.5
5/16-18
9/16
.084
.135
1
33114
33114P
$4.13
4.5
11.5
18.5
3/8-16
5/8
.110
.186
2
33116
33116P
$4.31
5.0
16.5
28.0
1/2-13
3/4
.151
.248
3
33118
33118P
$5.25
7.0
28.5
50.0
5/8-11
1-1/16
.215
.310
6
Heavy Spring Pressures — Brown Delrin® Nose
 "Short" Spring Plungers
With
Lock. Ele.
Part No.
Without
Lock. Ele.
Part No.
Price/ Unit
End Pressure Lbs.
A
B
C
+.000
-.002
D
Net Lbs/ 100
Start
1/2
Full
33000
33000P
$4.18
1.5
3.1
4.75
#8-32
7/16
.052
.070
1/2
33002
33002P
$4.18
1.5
3.1
4.75
#8-36
7/16
.052
.070
1/2
33004
33004P
$3.98
1.75
4.0
6.25
#10-32
15/32
.065
.093
1/2
33006
33006P
$3.98
3.0
6.75
10.5
1/4-20
17/32
.078
.119
1/2
33008
33008P
$4.05
3.75
9.6
15.5
5/16-18
9/16
.084
.135
1
33010
33010P
$4.13
4.5
11.5
18.5
3/8-16
5/8
.110
.186
1
33012
33012P
$4.31
5.0
16.5
28.0
1/2-13
3/4
.151
.248
2
33014
33014P
$5.25
7.0
28.5
50.0
5/8-11
1-1/16
.215
.310
5
Light Spring Pressures — Heat Treated Zinc Plated Steel Nose
 "Short" Spring Plungers
With
Lock. Ele.
Part No.
Without
Lock. Ele.
Part No.
Price/ Unit
End Pressure Lbs.
A
B
C
+.000
-.002
D
Net Lbs/ 100
Start
1/2
Full
33200
33200P
$4.18
.5
1.0
1.5
#8-32
7/16
.052
.070
1/2
33203
33203P
$4.18
.5
1.0
1.5
#8-36
7/16
.052
.070
1/2
33205
33205P
$3.98
.75
1.62
2.5
#10-32
15/32
.065
.093
1/2
33208
33208P
$3.98
1.0
2.25
3.5
1/4-20
17/32
.078
.119
1/2
33210
33210P
$4.05
1.5
2.75
4.0
5/16-18
9/16
.084
.135
1
33212
33212P
$4.13
1.5
3.25
5.0
3/8-16
5/8
.110
.186
1-1/2
33214
33214P
$4.31
1.75
3.62
5.5
1/2-13
3/4
.151
.248
2-1/2
33216
33216P
$5.25
2.0
5.25
8.5
5/8-11
1-1/16
.215
.310
6
Light Spring Pressures — White Delrin® Nose
 "Short" Spring Plungers
With
Lock. Ele.
Part No.
Without
Lock. Ele.
Part No.
Price/ Unit
End Pressure Lbs.
A
B
C
+.000
-.002
D
Net Lbs/ 100
Start
1/2
Full
33300
33300P
$4.18
.5
1.0
1.5
#8-32
7/16
.052
.070
1/2
33302
33302P
$4.18
.5
1.0
1.5
#8-36
7/16
.052
.070
1/2
33304
33304P
$3.98
.75
1.62
2.5
#10-32
15/32
.065
.093
1/2
33306
33306P
$3.98
1.0
2.25
3.5
1/4-20
17/32
.078
.119
1/2
33308
33308P
$4.05
1.5
2.75
4.0
5/16-18
9/16
.084
.135
1
33310
33310P
$4.13
1.5
3.25
5.0
3/8-16
5/8
.110
.186
1
33312
33312P
$4.31
1.75
3.62
5.5
1/2-13
3/4
.151
.248
2
33314
33314P
$5.25
2.0
5.25
8.5
5/8-11
1-1/16
.215
.310
5

 


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