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.

Stainless Steel Standard Lengths with Heavy Spring Pressures
Product Information

Stainless Steel Standard Lengths with Heavy Spring Pressures

All stainless steel parts are made of 303 material.

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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Stainless Steel Standard Lengths with Heavy Spring Pressures
Stainless Nose
With
Lock Ele.
Part No.
Without
Lock Ele.
Part No.
Color
Code
End
Pressures
Lbs. Start
End
Pressures
Lbs. 1/2
End
Pressures
Lbs. Full
A B C +.000
-.002
D
Net Lbs.
Per 100
33400 33400P Yellow 1.5 3.0 4.5 #6-32 17/32 .062 .046 1/2
33401 33401P Plain 1.0 1.3 1.6 #6-32 3/8 .062 .046 1/2
33403 33403P Yellow 2.7 5.0 7.3 #8-32 5/8 .093 .070 1/2
33404 33404P Yellow 2.9 7.0 11.1 #10-32 3/4 .125 .093 1/2
33405 33405P Yellow 3.0 8.0 13.0 1/4-20 1" .187 .119 1
33406 33406P Yellow 3.0 8.0 13.0 1/4-28 1" .187 .119 1
33407 33407P Plain 2.0 5.5 9.0 1/4-20 3/4 .125 .119 1
33408 33408P Yellow 3.0 9.0 15.0 5/16-18 1" .187 .135 2
33409 33409P Yellow 5.5 10.0 14.5 3/8-16 1-1/8 .187 .186 2
33410 33410P Yellow 6.6 12.0 17.4 1/2-13 1-1/4 .250 .248 5
Brown Delrin Nose
33443 33443P Plain 2.7 5.0 7.3 #8-32 5/8 .093 .070 1/2
33444 33444P Plain 2.9 7.0 11.1 #10-32 3/4 .125 .093 1/2
33445 33445P Plain 3.0 8.0 13.0 1/4-20 1" .187 .119 1
33446 33446P Plain 3.0 8.0 13.0 1/4-28 1" .187 .119 1
33448 33448P Plain 3.0 9.0 15.0 5/16-18 1" .187 .135 2
33449 33449P Plain 5.5 10.0 14.5 3/8-16 1-1/8 .187 .186 2
33450 33450P Plain 6.6 12.0 17.4 1/2-13 1-1/4 .250 .248 5

All parts conform to TCMAI Standards

Standard lengths available with Phenolic noses upon request.