Vlier PRSN375 Pull Ring Plunger 3/8-16 Steel

Product Description

The VLIER PRSN375 is a non-locking, spring-loaded pull ring plunger with a 3/8-16 thread and a steel body. It is designed for indexing, positioning, and locking applications in industrial and mechanical assemblies. The plunger delivers an initial end force of 0.75 pounds, ramping to a final end force of 3 pounds, making it suitable for light-duty positioning tasks. With a plunger diameter of 0.25 inches and a plunger projection of 0.28 inches, the PRSN375 installs into tapped holes and provides repeatable spring-loaded detent action. Maintenance technicians and machine builders install this component in fixtures, jigs, and mechanical panels.

This pull ring plunger is used in applications requiring a retractable plunger that can be manually withdrawn via the pull ring, allowing controlled engagement and disengagement without tools. Typical installations include assembly fixtures, tooling plates, equipment enclosures, and positioning mechanisms where a non-locking detent is required. The 3/8-16 thread allows installation into standard tapped steel or aluminum housings. The steel construction handles moderate wear in shop-floor and light industrial environments.

Key Features

• Non-locking pull ring design allows manual plunger retraction without tools
• 3/8-16 thread with 0.31 inches thread length for standard tapped-hole installation
• Spring force range: 0.75 pounds initial to 3 pounds final end force
• Plunger diameter of 0.25 inches with 0.28 inches projection for repeatable detent positioning
• Steel construction for durability in light industrial and mechanical assembly applications
• Compact body length of 0.63 inches suits space-constrained installations

Compatibility

Designed as an OEM-style spring plunger for industrial fixtures, tooling plates, and mechanical assemblies using 3/8-16 tapped holes.

Installation Notes

Install into a properly tapped 3/8-16 hole using the 0.38 inches hex for torquing with a standard wrench. Power down or de-energize any associated equipment before servicing components in the assembly. Do not overtighten, as excessive torque can distort the body and affect plunger travel. Consult applicable machinery safety standards for the specific application before installation.