Gibraltar 34248 Locking Plunger 5/8-11 Thread Steel

Product Description

The GIBRALTAR 34248 is a locking knob handle plunger with a threaded stud configuration (knobless) designed for use in mechanical clamping, positioning, and indexing applications. It features a 5/8-11 thread size with a 1 inch thread length and a stud thread size of 1/2-13. The plunger is made from steel with a zinc-plated finish for corrosion resistance. Initial end force is 1.25 pounds, advancing to a final end force of 5 pounds when locked. Maximum plunger diameter is 0.373 inches with a diameter tolerance of plus 0.001 inches. The locking element engages to hold the plunger in a fixed position, making this suitable for repeatable setups in manufacturing, fabrication, or equipment maintenance environments.

The GIBRALTAR 34248 is used in applications requiring a secure, repeatable plunger stop or index point — typically in jigs, fixtures, machine guards, and shop equipment. The knobless threaded stud design allows the plunger to be installed into a custom housing or panel where an external knob is not required or is supplied separately. It is suited for light industrial and trade environments where controlled engagement force and positive locking are needed. The plunger projection of 0.3125 inches and a length under head of 1.3125 inches fit standard panel thicknesses common in fabricated steel assemblies.

Key Features

• 5/8-11 main thread with 1 inch thread length for secure panel mounting
• Locking element holds plunger firmly in position during operation
• Initial end force of 1.25 pounds, final end force of 5 pounds
• Knobless threaded stud (1/2-13) for integration into custom housings
• Steel construction with zinc-plated finish for corrosion resistance
• Plunger diameter tolerance of plus 0.001 inches for consistent fit

Compatibility

Designed as a direct-replacement or OEM-style locking plunger for standard 5/8-11 threaded panel installations in jigs, fixtures, and light industrial equipment where a knobless threaded stud configuration is specified.

Installation Notes

Installation is typically performed by a machinist, fabricator, or maintenance technician using standard threading tools compatible with a 5/8-11 thread. Ensure the mating panel or housing is de-energized and secure before installing or replacing the plunger assembly. Do not overtighten the stud into the housing; thread engagement should be confirmed by feel and visual inspection. Verify plunger projection and locking action before returning equipment to service.