These Long-Lok® Ball-Style Spring Plungers with Slotted Sockets have bodies, balls & springs made from Steel and feature the Long-Lok® Thread System for securing the plunger in any position within the threaded hole. Long-Lok®: Clockwise insertion into a tapped hole expands the Long-Lok® System in the opposite direction, increasing the resistance and therefore the amount of torque required for loosening.
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Long-Lok® Ball-Style Spring Plungers with Slotted Sockets

Long-Lok® 10-32 Thread Size Ball-Style Spring Plunger with Slotted Sockets
Long-Lok® Ball-Style Spring Plungers with Slotted Sockets

Long-Lok® 8-32 Thread Size Ball-Style Spring Plunger with Slotted Sockets
Long-Lok® Ball-Style Spring Plungers with Slotted Sockets

Long-Lok® M3 Thread Size Ball-Style Spring Plunger with Slotted Sockets
Long-Lok® Ball-Style Spring Plungers with Slotted Sockets

Long-Lok® M8 Thread Size Ball-Style Spring Plunger with Slotted Sockets
Long-Lok® Ball-Style Spring Plungers with Slotted Sockets

Long-Lok® M8 Thread Size Ball-Style Spring Plunger with Slotted Sockets
Description N/A These Long-Lok® Ball-Style Spring Plungers with Slotted Sockets have bodies, balls & springs made from Steel and feature the Long-Lok® Thread System for securing the plunger in any position within the threaded hole. Long-Lok®: Clockwise insertion into a tapped hole expands the Long-Lok® System in the opposite direction, increasing the resistance and therefore the amount of torque required for loosening.
Type N/A Ball
Dimension D N/A 10-32 N/A 8-32 N/A M3 N/A M8 N/A M8
Dimension L N/A 12 mm N/A 9 mm N/A 7 mm N/A 16 mm N/A 16 mm
Dimension D1 N/A 3 mm N/A 2.5 mm N/A 1.5 mm N/A 5 mm N/A 5 mm
Dimension H N/A 0.9 mm N/A 0.8 mm N/A 0.5 mm N/A 1.5 mm N/A 1.5 mm
Dimension N N/A 0.8 mm N/A 0.6 mm N/A 0.4 mm N/A 1.2 mm N/A 1.2 mm
Pressure Type N/A Heavy N/A Standard N/A Standard N/A Heavy N/A Heavy
Approximate Spring Force Final Pressure F2 N/A 30 N N/A 10 N N/A 3 N N/A 73 N N/A 73 N
Approximate Spring Force Initial Pressure F1 N/A 19 N N/A 4 N N/A 1.5 N N/A 47 N N/A 47 N
Dimension L1 N/A 6 mm N/A 5 mm N/A 4 mm N/A 8 mm N/A 8 mm
Approximate Loosening Torque after Third Unscrewing N/A 0.08 nm N/A 0.12 nm N/A 0.07 nm N/A 0.37 nm N/A 0.37 nm
Approximate Tightening Torque N/A 0.12 nm N/A 0.18 nm N/A 0.10 nm N/A 1.09 nm N/A 1.09 nm
Material N/A Steel Quality Class 5.8 N/A Steel Quality Class 5.8 N/A Steel Quality Class 5.8 N/A Stainless Steel N/A Steel Quality Class 5.8
Ball Material N/A Steel N/A Steel N/A Steel N/A N/A Steel
Spring Material N/A Spring Steel D N/A Spring Steel D N/A Spring Steel D N/A N/A Spring Steel D
Long-Lok® Thread System Material N/A Nylon N/A Nylon N/A Nylon N/A N/A Nylon
Body Finish N/A Black Oxide N/A Black Oxide N/A Black Oxide N/A N/A Black Oxide
Weight N/A 0.02 lb N/A 0.02 lb N/A N/A N/A
Features and Benefits N/A
  • No loosening or falling out after impact or vibrations.
  • Allows a plunger to be secured in any position within the threaded hole.
  • After repeated use, the torque value remains nearly constant for approximately 20 uses.
  • Repeated Use - Torque Values remain nearly constant after approx. 20 uses
  • M16 or 6-32 to 5/8-11, light pressure to high pressure, steel or stainless steel, Long-Lok® Plungers will perform in any application.
Note N/A There are dozens of standard products to choose from representative sampling of sizes and styles. Please contact EFC International for a complete listing of all available products, options and specific combinations that meet your needs.
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