Gibraltar SPR38-PT-G Pull Ring Plunger 3/8-16 Stainless Steel

Product Description

The GIBRALTAR SPR38-PT-G is a stainless steel pull ring plunger designed for precision indexing, positioning, and retention applications in mechanical assemblies. The plunger body threads into a tapped hole using a 3/8-16 thread and deploys a spring-loaded nose to locate or hold a mating component in place. Initial end force is 0.75 pounds, rising to a final end force of 3 pounds, providing controlled resistance suited for light-duty indexing. The pull ring allows manual retraction without additional tools. Mechanical assemblers, millwrights, and maintenance technicians install this type of hardware in fixtures, jigs, machine guards, and equipment panels.

This pull ring plunger is suited for use in industrial machinery, assembly fixtures, and equipment enclosures where repeatable positioning or panel retention is required. The stainless steel construction resists corrosion, making it appropriate for washdown environments, food-processing equipment, and outdoor or humid service conditions. A single unit is packaged per order quantity, and the plunger installs in any tapped boss or plate accepting a 3/8-16 thread.

Key Features

• Pull ring allows tool-free manual retraction of the plunger nose
• 3/8-16 external thread for standard tapped-hole installation
• Spring force range: 0.75 pounds initial to 3 pounds final end force
• Stainless steel construction for corrosion resistance in demanding environments
• Non-locking plunger type for easy engagement and release
• Compact body length of 0.63 inches fits tight panel and fixture clearances

Compatibility

Designed as a standard OEM-style replacement or new-installation pull ring plunger for mechanical assemblies, fixtures, and equipment panels with a 3/8-16 tapped mounting hole.

Installation Notes

Installation requires a properly tapped 3/8-16 through-hole or blind boss of sufficient depth to engage the 0.31-inch thread length. Use a 0.38-inch hex wrench or appropriately sized open-end wrench on the hex flats to thread the plunger body in to the desired torque per the equipment manufacturer's fastener specifications. Ensure the mating surface or detent recess aligns with the plunger nose centerline before final tightening. Depressurize or de-energize any assembly before servicing indexing hardware.