Knob Plunger Pins - Spring Plunger Pins - Spring Loaded Plunger Pins

Plastic knob retractable plungers are used in machining applications with limited space as positioners, loading pins, and indexing devices. This particular style pin comes equipped with an easy to grasp knurled knob for withdrawing and engaging the plunger. To withdraw plunger tip, pull on the knob, adjust work piece to re-align perforated holes, and release to re-engage the plunger tip. This robust, durable design is suitable for repetitive-use applications.

For quantities less than 100 pieces, please visit our distributors’ website by clicking link below.

K4 Spring Loaded Plunger Pin Line Drawing

Unit of Measure

Items	1/4-20 Plastic Knob Plunger Pins Plastic Knob Plunger Pins	3/8-16 Plastic Knob Plunger Pins Plastic Knob Plunger Pins	1/2-13 Plastic Knob Plunger Pins Plastic Knob Plunger Pins	5/8-11 Plastic Knob Plunger Pins Plastic Knob Plunger Pins
End Force Initial/Lbs.	N/A 0.5	N/A 0.75	N/A 1.0	N/A 1.25
End Force Final/Lbs.	N/A 2.0	N/A 3.0	N/A 4.0	N/A 5.0
Thread A	N/A 1/4-20	N/A 3/8-16	N/A 1/2-13	N/A 5/8-11
B	N/A 0.44 in	N/A 0.63 in	N/A 0.81 in	N/A 1.00 in
C	N/A 0.19 in	N/A 0.28 in	N/A 0.38 in	N/A 0.44 in
D	N/A 0.16 in	N/A 0.25 in	N/A 0.31 in	N/A 0.38 in
E	N/A 0.75"	N/A 0.75"	N/A 1.00"	N/A 1.00"
F	N/A N/A	N/A 0.13"	N/A 0.13"	N/A 0.13"
G	N/A 0.17"
H	N/A 0.31"	N/A 0.44"	N/A 0.56"	N/A 0.69"
M	N/A 0.46"	N/A 0.46"	N/A 0.58"	N/A 0.58"