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 Body Short Spring Plungers with Extended Travel
Product Information

Steel Body Short Spring Plungers with Extended Travel

Bodies are 12L14 steel with a black oxide finish.

Noses are 12L14 black oxide steel or brown delrin.

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 Body Short Spring Plungers with Extended Travel
Heat Treated Black Oxide Steel Nose
With
Lock Ele.
Part No.
Without
Lock Ele.
Part No.
End
Pressures
Lbs. Start
End
Pressures
Lbs. Full
A B C +.000
-.002
D
Net Lbs.
Per 100
33135 33135P 1.0 3.25 #8-32 7/16 .093 .070 1/2
33136 33136P 1.0 3.25 #8-36 7/16 .093 .070 1/2
33137 33137P 1.25 4.25 #10-32 15/32 .125 .093 1/2
33138 33138P 2.0 7.0 1/4-20 17/32 .187 .119 1/2
33139 33139P 2.0 9.0 5/16-18 9/16 .187 .135 1
33140 33140P 3.0 12.5 3/8-16 5/8 .187 .186 2
33141 33141P 3.5 19.0 1/2-13 3/4 .250 .248 3
33142 33142P 4.5 33.5 5/8-11 1-1/16 .312 .310 6
Brown Delrin Nose
33035 33035P 1.0 3.25 #8-32 7/16 .093 .070 1/2
33036 33036P 1.0 3.25 #8-36 7/16 .093 .070 1/2
33037 33037P 1.25 4.25 #10-32 15/32 .125 .093 1/2
33038 33038P 2.0 7.0 1/4-20 17/32 .187 .119 1/2
33039 33039P 2.0 9.0 5/16-18 9/16 .187 .135 1
33040 33040P 3.0 12.5 3/8-16 5/8 .187 .186 1
33041 33041P 3.5 19.0 1/2-13 3/4 .250 .248 2
33042 33042P 4.5 33.5 5/8-11 1-1/16 .312 .310 5