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.

Hex Drive Stainless Steel Ball Plungers
Product Information

Balls are 440 stainless.

The 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.

Plungers may be ordered with or without the locking element. Plungers without the 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.

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

All stainless bodies are made of 303 material.



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Hex Drive Steel Ball Plungers
Stainless Steel Ball
Part No. Without
Lock Ele.
**Color
Code
End
Press.-Lbs.
Start
End
Press.-Lbs.
Full
A B C Ball Dia.
D
Hex Dia.
E
Net lbs
Per 100
10101H 10101HP Plain 0.5 1.5 10-32 9/16 .025 .093 5/64 1/2
10102H 10102HP Black 1.5 3.0 10-32 9/16 .025 .093 5/64 1/2
10103H 10103HP Yellow 2.0 5.0 10-32 9/16 .025 .093 5/64 1/2
10104H 10104HP Plain 2.0 4.0 1/4-20 43/64 .035 .125 5/64 3/4
10105H 10105HP Black 3.0 7.0 1/4-20 43/64 .035 .125 5/64 3/4
10106H 10106HP Yellow 4.0 12.0 1/4-20 43/64 .035 .125 5/64 3/4
10107H 10107HP Plain 2.0 4.5 5/16-18 23/32 .040 .156 3/32 1
10108H 10108HP Black 4.0 9.0 5/16-18 23/32 .040 .156 3/32 1
10109H 10109HP Yellow 6.0 17.0 5/16-18 23/32 .040 .156 3/32 1
10110H 10110HP Plain 2.5 5.0 3/8-16 13/16 .048 .187 5/32 1-1/2
10111H 10111HP Black 5.0 10.0 3/8-16 13/16 .048 .187 5/32 1-1/2
10112H 10112HP Yellow 6.0 21.0 3/8-16 13/16 .048 .187 5/32 1-1/2
10113H 10113HP Plain 3.0 6.0 1/2-13 1-3/64 .072 .281 7/32 4
10114H 10114HP Black 6.0 12.0 1/2-13 1-3/64 .072 .281 7/32 4
10115H 10115HP Yellow 6.0 30.0 1/2-13 1-3/64 .072 .281 7/32 4
10116H 10116HP Plain 4.5 9.0 5/8-11 1-15/64 .096 .375 1/4 6-1/2
10117H 10117HP Black 9.0 18.0 5/8-11 1-15/64 .096 .375 1/4 6-1/2
10118H 10118HP Yellow 7.0 50.0 5/8-11 1-15/64 .096 .375 1/4 6-1/2

** Plain - Light Pressures

Black - Medium Pressures

Yellow - Heavy Pressures