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 and Stainless Steel Knurled Head Plungers - Locking
Product Information

Steel and Stainless Steel Knurled Head Plungers - Locking

Used in machining applications as positioners, loading pins, indexing devices.

Steel parts are 12L14 material, zinc plated and heat treated.

Noses are 11L41 material.

Al stainless steel parts are 303 material.

Improved design allows plunger nose to be locked in a fully retracted position. Plunger nose has a chamfered end to assure easy alignment. Full pressures are the force pounds needed to move the nose the distance shown in "C" column.

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.

Plunger can be withdrawn completely into the body and locked in a fully retracted position. To engage the plunger, simply turn to line up with slot in body.

Available with or without locking element.


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Steel and Stainless Steel Knurled Head Plungers - Locking
Heavy Pressure
Steel
Part
No.
Stainless
Steel
Part No.
End
Pressures
Lbs. Start
End
Pressures
Lbs. Full
A B C +.000
-.002
D
E F Net Lbs.
Per 100
33809 33819 1.0 3.5 #10-32 13/32 3/32 .104 3/16 3/8 1
33810 33820 1.0 5.0 1/4-20 1/2 1/8 .124 1/4 1/2 3
33811 33821 1.5 6.0 5/16-18 5/8 3/16 .155 9/32 5/8 5
33812 33822 1.5 8.0 3/8-16 3/4 7/32 .186 5/16 3/4 7
33813 33823 2.5 10.0 1/2-13 7/8 1/4 .249 3/8 1" 13
33813A 33823A 5.0 10.0 5/8-11 1" 5/16 .311 13/32 1-1/8 20
Phenolic Nose - Heavy Pressure
33840 33850 1.0 5.0 1/4-20 1/2 1/8 .124 1/4 1/2 3
33841 33851 1.5 6.0 5/16-18 5/8 3/16 .155 9/32 5/8 5
33842 33852 1.5 8.0 3/8-16 3/4 7/32 .186 5/16 3/4 7
33843 33853 2.5 10.0 1/2-13 7/8 1/4 .249 3/8 1" 13
Light Pressure
33814 33824 0.5 2.0 #10-32 13/32 3/32 .104 3/16 3/8 1
33815 33825 0.5 2.5 1/4-20 1/2 1/8 .124 1/4 1/2 3
33816 33826 0.75 3.0 5/16-18 5/8 3/16 .155 9/32 5/8 5
33817 33827 0.75 4.0 3/8-16 3/4 7/32 .186 5/16 3/4 7
33818 33828 1.25 5.0 1/2-13 7/8 1/4 .249 3/8 1" 13
33818A 33828A 3.0 6.0 5/8-11 1" 5/16 .311 13/32 1-1/8 20
Phenolic Nose - Light Pressure
33845 33855 0.5 2.5 1/4-20 1/2 1/8 .124 1/4 1/2 3
33846 33856 0.75 3.0 5/16-18 5/8 3/16 .155 9/32 5/8 5
33847 33857 0.75 4.0 3/8-16 3/4 7/32 .186 5/16 3/4 7
33848 33858 1.25 5.0 1/2-13 7/8 1/4 .249 3/8 1" 13

All parts conform to TCMAI Standards