Spring Plungers
Heavy
Spring Pressures
Locking Element
Light Spring Pressures
 |
With Steel, Delrin® or
Phenolic Noses
Heavy or Light Spring Pressures
Steel noses are case hardened for wear resistance without brittleness.
Delrin® and Phenolic 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.
*Conform to TCMAI/NIJFCM standards.
Heavy Spring
Pressures — Heat Treated Black Oxide Steel Nose
Spring
Plungers |
|
Without
Lock. Ele.
Part No. |
Price/
Unit |
End
Pressure Lbs. |
A |
B |
C |
+.000
-.002
D |
Net
Lbs/ 100 |
Start |
1/2 |
Full |
*33101 |
*33101P |
$4.43 |
1.5 |
3.0 |
4.5 |
#6-32 |
17/32 |
.062 |
.046 |
1/2 |
33102 |
33102P |
$4.43 |
1.0 |
1.3 |
1.6 |
#6-32 |
3/8 |
.062 |
.046 |
1/2 |
*33103 |
*33103P |
$4.31 |
2.7 |
5.0 |
7.3 |
#8-32 |
5/8 |
.093 |
.070 |
1/2 |
*33105 |
*33105P |
$4.05 |
2.9 |
7.0 |
11.1 |
#10-32 |
3/4 |
.125 |
.093 |
1/2 |
*33107 |
*33107P |
$4.05 |
3.0 |
8.0 |
13.0 |
1/4-20 |
1" |
.187 |
.119 |
1 |
|
33108P |
$4.05 |
3.0 |
8.0 |
13.0 |
1/4-28 |
1" |
.187 |
.119 |
1 |
33109 |
33109P |
$4.05 |
2.0 |
5.5 |
9.0 |
1/4-20 |
3/4 |
.125 |
.119 |
1 |
*33111 |
*33111P |
$4.13 |
3.0 |
9.0 |
15.0 |
5/16-18 |
1" |
.187 |
.135 |
2 |
*33113 |
*33113P |
$4.18 |
5.5 |
10.0 |
14.5 |
3/8-16 |
1-1/8 |
.187 |
.186 |
2 |
*33115 |
*33115P |
$4.37 |
6.6 |
12.0 |
17.4 |
1/2-13 |
1-1/4 |
.250 |
.248 |
5 |
*33117 |
*33117P |
$5.38 |
10.5 |
18.0 |
25.5 |
5/8-11 |
1-1/2 |
.312 |
.310 |
8 |
*33119 |
*33119P |
$7.97 |
6.7 |
22.0 |
37.3 |
3/4-10 |
1-3/4 |
.312 |
.374 |
14 |
*33120 |
*33120P |
$14.92 |
16.0 |
42.0 |
68.0 |
1"-8 |
2-13/32 |
.500 |
.499 |
34 |
Heavy
Spring Pressures — Brown Delrin® Nose
Spring
Plungers |
|
Without
Lock. Ele.
Part No. |
Price/
Unit |
End
Pressure Lbs. |
A |
B |
C |
+.000
-.002
D |
Net
Lbs/ 100 |
Start |
1/2 |
Full |
*33001 |
*33001P |
$4.31 |
2.7 |
5.0 |
7.3 |
#8-32 |
5/8 |
.093 |
.070 |
1/2 |
*33003 |
*33003P |
$4.05 |
2.9 |
7.0 |
11.1 |
#10-32 |
3/4 |
.125 |
.093 |
1/2 |
*33005 |
*33005P |
$4.05 |
3.0 |
8.0 |
13.0 |
1/4-20 |
1" |
.187 |
.119 |
1 |
*33005A |
*33005AP |
$4.05 |
3.0 |
8.0 |
13.0 |
1/4-28 |
1" |
.187 |
.119 |
1 |
*33007 |
*33007P |
$4.13 |
3.0 |
9.0 |
15.0 |
5/16-18 |
1" |
.187 |
.135 |
1-1/2 |
*33009 |
*33009P |
$4.18 |
5.5 |
10.0 |
14.5 |
3/8-16 |
1-1/8 |
.187 |
.186 |
2 |
*33011 |
*33011P |
$4.37 |
6.6 |
12.0 |
17.4 |
1/2-13 |
1-1/4 |
.250 |
.248 |
4 |
*33013 |
*33013P |
$5.38 |
10.5 |
18.0 |
25.5 |
5/8-11 |
1-1/2 |
.312 |
.310 |
7 |
Heavy
Spring Pressures — Phenolic Nose
Spring
Plungers |
|
Without
Lock. Ele.
Part No. |
Price/
Unit |
End
Pressure Lbs. |
A |
B |
C |
+.000
-.002
D |
Net
Lbs/ 100 |
Start |
1/2 |
Full |
33021 |
33021P |
$4.53 |
2.7 |
5.0 |
7.3 |
#8-32 |
5/8 |
.093 |
.070 |
1/2 |
33023 |
33023P |
$4.25 |
2.9 |
7.0 |
11.1 |
#10-32 |
3/4 |
.125 |
.093 |
1/2 |
33025 |
33025P |
$4.25 |
3.0 |
8.0 |
13.0 |
1/4-20 |
1" |
.187 |
.119 |
1 |
33025A |
33025AP |
$4.25 |
3.0 |
8.0 |
13.0 |
1/4-28 |
1" |
.187 |
.119 |
1 |
33027 |
33027P |
$4.34 |
3.0 |
9.0 |
15.0 |
5/16-18 |
1" |
.187 |
.135 |
1-1/2 |
33029 |
33029P |
$4.41 |
5.5 |
10.0 |
14.5 |
3/8-16 |
1-1/8 |
.187 |
.186 |
2 |
33031 |
33031P |
$4.60 |
6.6 |
12.0 |
17.4 |
1/2-13 |
1-1/4 |
.250 |
.248 |
4 |
33033 |
33033P |
$5.66 |
10.5 |
18.0 |
25.5 |
5/8-11 |
1-1/2 |
.312 |
.310 |
7 |
|
Light
Spring Pressures — Heat Treated Zinc Plated Steel
Nose
Spring
Plungers |
|
Without
Lock. Ele.
Part No. |
Price/
Unit |
End
Pressure Lbs. |
A |
B |
C |
+.000
-.002
D |
Net
Lbs/ 100 |
Start |
1/2 |
Full |
*33201 |
*33201P |
$4.43 |
0.5 |
1.0 |
1.5 |
#6-32 |
17/32 |
.062 |
.046 |
1/2 |
*33202 |
*33202P |
$4.31 |
0.7 |
1.5 |
2.3 |
#8-32 |
5/8 |
.093 |
.070 |
1/2 |
*33204 |
*33204P |
$4.05 |
1.3 |
2.0 |
2.7 |
#10-32 |
3/4 |
.125 |
.093 |
1/2 |
*33206 |
*33206P |
$4.05 |
1.0 |
2.5 |
4.0 |
1/4-20 |
1" |
.187 |
.119 |
1 |
33207 |
33207P |
$4.05 |
1.0 |
2.5 |
4.0 |
1/4-28 |
1" |
.187 |
.119 |
1 |
|
*33209P |
$4.13 |
1.5 |
3.0 |
4.5 |
5/16-18 |
1" |
.187 |
.135 |
1-1/2 |
*33211 |
*33211P |
$4.18 |
2.8 |
5.0 |
7.2 |
3/8-16 |
1-1/8 |
.187 |
.186 |
2 |
*33213 |
*33213P |
$4.37 |
2.7 |
6.0 |
9.3 |
1/2-13 |
1-1/4 |
.250 |
.248 |
4-1/2 |
*33215 |
*33215P |
$5.38 |
3.5 |
7.0 |
10.5 |
5/8-11 |
1-1/2 |
.312 |
.310 |
8 |
33217 |
33217P |
$7.97 |
4.0 |
10.0 |
16.0 |
3/4-10 |
1-3/4 |
.312 |
.374 |
14 |
33218 |
33218P |
$14.92 |
4.0 |
17.5 |
31.0 |
1"-8 |
2-13/32 |
.500 |
.499 |
34 |
Light
Spring Pressures — White Delrin® Nose
Spring
Plungers |
|
Without
Lock. Ele.
Part No. |
Price/
Unit |
End
Pressure Lbs. |
A |
B |
C |
+.000
-.002
D |
Net
Lbs/ 100 |
Start |
1/2 |
Full |
*33301 |
*33301P |
$4.31 |
0.7 |
1.5 |
2.3 |
#8-32 |
5/8 |
.093 |
.070 |
1/2 |
*33303 |
*33303P |
$4.05 |
1.3 |
2.0 |
2.7 |
#10-32 |
3/4 |
.125 |
.093 |
1/2 |
*33305 |
*33305P |
$4.05 |
1.0 |
2.5 |
4.0 |
1/4-20 |
1" |
.187 |
.119 |
1 |
*33305A |
*33305AP |
$4.05 |
1.0 |
2.5 |
4.0 |
1/4-28 |
1" |
.187 |
.119 |
1 |
*33307 |
*33307P |
$4.13 |
1.5 |
3.0 |
4.5 |
5/16-18 |
1" |
.187 |
.135 |
1-1/2 |
*33309 |
*33309P |
$4.18 |
2.8 |
5.0 |
7.2 |
3/8-16 |
1-1/8 |
.187 |
.186 |
2 |
*33311 |
*33311P |
$4.37 |
2.7 |
6.0 |
9.3 |
1/2-13 |
1-1/4 |
.250 |
.248 |
4 |
*33313 |
*33313P |
$5.38 |
3.5 |
7.0 |
10.5 |
5/8-11 |
1-1/2 |
.312 |
.310 |
7 |
Light
Spring Pressures — Phenolic Nose
Spring
Plungers |
|
Without
Lock. Ele.
Part No. |
Price/
Unit |
End
Pressure Lbs. |
A |
B |
C |
+.000
-.002
D |
Net
Lbs/ 100 |
Start |
1/2 |
Full |
33321 |
33321P |
$4.53 |
0.7 |
1.5 |
2.3 |
#8-32 |
5/8 |
.093 |
.070 |
1/2 |
33323 |
33323P |
$4.25 |
1.3 |
2.0 |
2.7 |
#10-32 |
3/4 |
.125 |
.093 |
1/2 |
33325 |
33325P |
$4.25 |
1.0 |
2.5 |
4.0 |
1/4-20 |
1" |
.187 |
.119 |
1 |
33325A |
33325AP |
$4.25 |
1.0 |
2.5 |
4.0 |
1/4-28 |
1" |
.187 |
.119 |
1 |
33327 |
33327P |
$4.34 |
1.5 |
3.0 |
4.5 |
5/16-18 |
1" |
.187 |
.135 |
1-1/2 |
33329 |
33329P |
$4.41 |
2.8 |
5.0 |
7.2 |
3/8-16 |
1-1/8 |
.187 |
.186 |
2 |
33331 |
33331P |
$4.60 |
2.7 |
6.0 |
9.3 |
1/2-13 |
1-1/4 |
.250 |
.248 |
4 |
33333 |
33333P |
$5.66 |
3.5 |
7.0 |
10.5 |
5/8-11 |
1-1/2 |
.312 |
.310 |
7 |
 |
