Product Spotlight:

Our line of Press-Thru (trade marked) spring and ball plungers have the same dimensions, spring pressures, and materials as our standard press fit product line.
Press-Thru™ Spring and Ball Plungers

Our line of Press-Thru™ spring and ball plungers have the same dimensions, spring pressures, and materials as our standard press fit product line. They are designed without the flange on the nose end to allow for the insertion of the plunger from top or bottom, front or back. Simply press the body through the hole until the plunger is flush with the surface. The body is slightly over sized to fit firmly into the hole. Please contact us for a free sample, or if you need any technical information.

Steel Spring Plungers with Light Spring Pressures
Product Information

Steel Spring Plungers with Light Spring Pressures

Bodies are 12L14 steel with a black oxide finish

Noses are zinc plated steel, white delrin or phenolic.

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

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


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Steel Spring Plungers with Light Spring Pressures
Heat Treated Zinc Plated Steel Nose
With
Lock Ele.
Part No.
Without
Lock Ele.
Part No.
End
Pressures
Lbs. Start
End
Pressures
Lbs. 1/2
End
Pressures
Lbs. Full
A B C +.000
-.002
D
Net Lbs.
Per 100
33201 33201P 0.5 1.0 1.5 #6-32 17/32 .062 .046 1/2
33202 33202P 0.7 1.5 2.3 #8-32 5/8 .093 .070 1/2
33204 33204P 1.3 2.0 2.7 #10-32 3/4 .125 .093 1/2
33206 33206P 1.0 2.5 4.0 1/4-20 1" .187 .119 1
33207 33207P 1.0 2.5 4.0 1/4-28 1" .187 .119 1
33209 33209P 1.5 3.0 4.5 5/16-18 1" .187 .135 1-1/2
33211 33211P 2.8 5.0 7.2 3/8-16 1-1/8 .187 .186 2
33213 33213P 2.7 6.0 9.3 1/2-13 1-1/4 .250 .248 4-1/2
33215 33215P 3.5 7.0 10.5 5/8-11 1-1/2 .312 .310 8
33217 33217P 4.0 10.0 16.0 3/4-10 1-3/4 .312 .374 14
33218 33218P 4.0 17.5 31.0 1"-8 2-13/32 .500 .499 34
White Delrin Nose
33301 33301P 0.7 1.5 2.3 #8-32 5/8 .093 .070 1/2
33303 33303P 1.3 2.0 2.7 #10-32 3/4 .125 .093 1/2
33305 33305P 1.0 2.5 4.0 1/4-20 1" .187 .119 1
33305A 33305AP 1.0 2.5 4.0 1/4-28 1" .187 .119 1
33307 33307P 1.5 3.0 4.5 5/16-18 1" .187 .135 1-1/2
33309 33309P 2.8 5.0 7.2 3/8-16 1-1/8 .187 .186 2
33311 33311P 2.7 6.0 9.3 1/2-13 1-1/4 .250 .248 4
33313 33313P 3.5 7.0 10.5 5/8-11 1-1/2 .312 .310 7
Phenolic Nose
33321 33321P 0.7 1.5 2.3 #8-32 5/8 .093 .070 1/2
33323 33323P 1.3 2.0 2.7 #10-32 3/4 .125 .093 1/2
33325 33325P 1.0 2.5 4.0 1/4-28 1" .187 .119 1
33325A 33325AP 1.0 2.5 4.0 1/4-28 1" .187 .119 1
33327 33327P 1.5 3.0 4.5 5/16-18 1" .187 .135 1-1/2
33329 33329P 2.8 5.0 7.2 3/8-16 1-1/8 .187 .186 2
33331 33331P 2.7 6.0 9.3 1/2-13 1-1/4 .250 .248 4
33333 33333P 3.5 7.0 10.5 5/8-11 1-1/2 .312 .310 7

All parts conform to TCMAI Standards