Vlier SLF375P Locking Knob Handle Plunger 3/8-16

Product Description

The VLIER SLF375P is a locking knob handle plunger designed for indexing, positioning, and locating applications in industrial and mechanical assemblies. It features a 3/8-16 threaded body with a 0.75 inch thread length and a knurled locking knob that allows the plunger to be held in the retracted position. The plunger diameter ranges from 0.185 to 0.186 inches with a projection of 0.22 inches. End force ranges from 0.5 pounds initial to 3 pounds final, providing controlled engagement. The unit is constructed from steel with a zinc gold chromate finish for corrosion resistance. Licensed tradespeople and maintenance technicians typically install this hardware in equipment panels, fixtures, and assemblies.

The SLF375P suits applications where a repeatable, spring-loaded positioning point is needed and where the plunger must occasionally be locked out of engagement. Common install scenarios include machine tooling, jigs, fixtures, enclosure panels, and mechanical assemblies in industrial maintenance environments. The locking knob style allows the plunger to be manually retracted and held, which is useful during setup or tooling changes where continuous plunger engagement would interfere with the work.

Key Features

• Locking plunger element holds plunger in retracted position via knurled knob
• 3/8-16 thread size with 0.75 inch thread length for standard installation
• End force range of 0.5 pounds initial to 3 pounds final for controlled positioning
• Plunger diameter 0.185 to 0.186 inches with 0.22 inch projection
• Steel construction with zinc gold chromate finish for corrosion resistance
• Knurled knob style for secure manual grip during locking and unlocking

Compatibility

Designed as a direct-install locking knob handle plunger for standard 3/8-16 threaded bores in industrial fixtures, machine panels, and mechanical assemblies where spring-loaded positioning hardware is required.

Installation Notes

Installation is performed by threading the SLF375P into a prepared 3/8-16 tapped hole using the knurled head. Ensure the mating bore is clean and the thread is properly tapped to the correct depth before installation. De-energize or lock out any equipment before servicing assemblies that contain spring-loaded plungers. Do not exceed the plunger's rated end force range by modifying the spring or forcing the plunger beyond its designed travel.