Delrin Tip / Stainless Steel Spring Plungers

Jergens Spring Plungers, unlike conventional spring plungers, are machined in one piece. The spring is assembled from the top so that there is no need for a set screw. Our Spring Plungers do not have a set screw that can loosen or separate from the plunger body. The advantage is no lost springs and no need for “easy-out” tools. When adjusting Solid Drive, you can be sure the plunger body is turning and not a set screw.

Features & Benefits:
  • Single-unit construction for better reliability
  • No set screw to separate from the plunger body
  • No need for “easy-out” tools
  • Close tolerance between tip and body
  • Conforms to TCMA dimensional standards
  • Patch-style locking element
  • Hex drive in the rear for spring plunger insertion
  • Special materials and sizes available upon requests

Material Specifications:
  • Body Material: Low Carbon Steel
  • Body Finish: Black Oxide
  • Tip Material: Delrin
  • Thread: 2A-UNC
  • Plunger tips are color coded to indicate light or heavy force:
    • White: Delrin Tip, Light Force
    • Blue: Delrin Tip, Heavy Force

Note(s):
For easy insertion of Spring Plungers with locking elements, the tapped hole should be countersunk at least 0.030-0.045" (0.76mm-1.14mm) larger than the major diameter of the plunger.

Delrin Tip / Stainless Steel Spring Plungers

Select a part number for CAD drawings, price and stock availability.

Part Number CAD Unit Thread Size A Initial Force (lbs) Final Force (lbs) B (In) C (In) D (In) Hex Size E Locking Element
30500 icon_cad Inch 6-32 1.50 4.50 17/32 1/16 0.046 3/64 No
30501 icon_cad Inch 8-32 2.70 7.30 5/8 3/32 0.070 5/64 No
30502 icon_cad Inch 10-32 2.90 11.1 3/4 1/8 0.093 3/32 No
30503 icon_cad Inch 1/4-20 3.00 13.0 1 3/16 0.119 1/8 No
30504 icon_cad Inch 1/4-28 3.00 13.0 1 3/16 0.119 1/8 No
30505 icon_cad Inch 5/16-18 3.00 15.0 1 3/16 0.135 5/32 No
30506 icon_cad Inch 3/8-16 5.50 14.5 1 1/8 3/16 0.186 3/16 No
30507 icon_cad Inch 1/2-13 6.60 17.4 1 1/4 1/4 0.248 1/4 No
30508 icon_cad Inch 5/8-11 10.5 25.5 1 1/2 5/16 0.310 5/16 No
30510 icon_cad Inch 6-32 0.50 1.50 17/32 1/16 0.046 3/64 No
30511 icon_cad Inch 8-32 0.70 2.30 5/8 3/32 0.070 5/64 No
30512 icon_cad Inch 10-32 1.30 2.70 3/4 1/8 0.093 3/32 No
30513 icon_cad Inch 1/4-20 1.00 4.00 1 3/16 0.119 1/8 No
30514 icon_cad Inch 1/4-28 1.00 4.00 1 3/16 0.119 1/8 No
30515 icon_cad Inch 5/16-18 1.50 4.50 1 3/16 0.135 5/32 No
30516 icon_cad Inch 3/8-16 2.80 7.20 1 1/8 3/16 0.186 3/16 No
30517 icon_cad Inch 1/2-13 2.70 9.30 1 1/4 1/4 0.248 1/4 No
30518 icon_cad Inch 5/8-11 3.50 10.5 1 1/2 5/16 0.310 5/16 No
30536 icon_cad Inch 6-32 1.50 4.50 17/32 1/16 0.046 3/64 Yes
30537 icon_cad Inch 8-32 2.70 7.30 5/8 3/32 0.070 5/64 Yes
30538 icon_cad Inch 10-32 2.90 11.1 3/4 1/8 0.093 3/32 Yes
30539 icon_cad Inch 1/4-20 3.00 13.0 1 3/16 0.119 1/8 Yes
30540 icon_cad Inch 1/4-28 3.00 13.0 1 3/16 0.119 1/8 Yes
30541 icon_cad Inch 5/16-18 3.00 15.0 1 3/16 0.135 5/32 Yes
30542 icon_cad Inch 3/8-16 5.50 14.5 1 1/8 3/16 0.186 3/16 Yes
30543 icon_cad Inch 1/2-13 6.60 17.4 1 1/4 1/4 0.248 1/4 Yes
30544 icon_cad Inch 5/8-11 10.5 25.5 1 1/2 5/16 0.310 5/16 Yes
30936 icon_cad Inch 6-32 0.50 1.50 17/32 1/16 0.046 3/64 Yes
30937 icon_cad Inch 8-32 0.70 2.30 5/8 3/32 0.070 5/64 Yes
30938 icon_cad Inch 10-32 1.30 2.70 3/4 1/8 0.093 3/32 Yes
30939 icon_cad Inch 1/4-20 1.00 4.00 1 3/16 0.119 1/8 Yes
30940 icon_cad Inch 1/4-28 1.00 4.00 1 3/16 0.119 1/8 Yes
30941 icon_cad Inch 5/16-18 1.50 4.50 1 3/16 0.135 5/32 Yes
30942 icon_cad Inch 3/8-16 2.80 7.20 1 1/8 3/16 0.186 3/16 Yes
30943 icon_cad Inch 1/2-13 2.70 9.30 1 1/4 1/4 0.248 1/4 Yes
30944 icon_cad Inch 5/8-11 3.50 10.5 1 1/2 5/16 0.310 5/16 Yes
30945 icon_cad Inch 3/4-10 5.50 14.5 1 3/4 5/16 0.374 3/8 Yes

Documents and Videos

  • icon_pdf Operating Manual
  • icon_pdf Operating Manual - 81600 ONLY
  • icon_pdf Jergens Production Vise System
  • icon_pdf Jergens Production Vises Features and Benefits
  • icon_pdf Vertical Machine Solutions
  • icon_pdf Horizontal Machine Solutions
  • icon_pdf Hydraulic Production Vises
  • icon_pdf Production Vises

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