Gibraltar 52013G Threaded Spring Plunger 1/8 Steel Locking

Product Description

The GIBRALTAR 52013G is a threaded spring plunger designed for indexing, positioning, and light-duty detent applications in mechanical assemblies. It features a steel body with a black finish, a standard-length plunger of 2-13/32 inches, and a maximum plunger diameter of 0.499 inches with 1/2 inch of projection. The integrated locking element secures the plunger in the threaded bore, preventing rotation or backing out during vibration or repeated cycling. With a 16 lb initial end force and a 68 lb final end force, the 52013G delivers firm, predictable spring resistance suited to production tooling, fixtures, and precision mechanical components.

This plunger is suited for use in machine tool fixtures, jigs, production equipment, and industrial assemblies requiring repeatable spring-loaded positioning. The 1/8 thread size and 2-13/32 inch thread length allow installation into a wide range of threaded bores in machined plates, brackets, and housing blocks. The 3/8 inch hex body facilitates wrench tightening during installation. Applications are typically found in light manufacturing, maintenance and repair, and precision assembly environments where consistent plunger force and secure retention are required.

Key Features

• Locking element prevents the plunger from loosening or rotating under vibration
• 16 lb initial end force and 68 lb final end force for firm, consistent spring resistance
• Steel nose and body construction with black finish for durability
• 1/2 inch plunger projection with 0.499 inch maximum diameter
• 3/8 inch hex body for wrench installation and secure torque application
• Standard-length design with 2-13/32 inch body and thread length

Compatibility

Designed as an OEM-style replacement or direct-fit component for threaded spring plunger applications using a 1/8 thread size in machined fixtures, jigs, and industrial mechanical assemblies.

Installation Notes

Installation is performed by machinists or maintenance technicians using a wrench on the 3/8 inch hex body. Ensure the mating threaded bore is clean and free of debris before installing. Apply appropriate thread-locking considerations given that the integrated locking element is the primary retention feature. Do not over-torque the body, as this may deform the plunger housing or damage the threaded bore.