Climax Metal Products ISTC-031-24 Threaded Shaft Collar

Product Description

The CLIMAX METAL PRODUCTS ISTC-031-24 is a one-piece threaded shaft collar designed to secure rotating shafts in mechanical power transmission assemblies. Machined from steel with a black oxide finish, this collar features a 5/16-24 threaded bore with a 0.31-inch bore diameter, an 11/16-inch outside diameter, and a 5/16-inch width. The black oxide finish provides basic corrosion resistance and reduces light reflection in service environments. Weighing 0.25 pounds, this compact collar is well suited for machine builders, maintenance mechanics, and industrial equipment technicians working with small-diameter shaft assemblies.

This collar is used wherever a threaded shaft end requires a positive stop, spacer, or positioning device. Typical applications include motors, pumps, conveyors, fans, and other rotating equipment found in light industrial, HVAC, and mechanical systems. The one-piece threaded design eliminates the need for a separate set screw or clamping hardware, making it appropriate for installations where space constraints limit access to the shaft end. It is installed by threading directly onto the shaft to the desired position.

Key Features

• One-piece threaded design for direct engagement with threaded shaft ends
• 5/16-24 thread size with 0.31-inch bore diameter for precise shaft fit
• 11/16-inch outside diameter and 5/16-inch width for compact installations
• Steel construction with black oxide finish for durability and corrosion resistance
• Manufactured under ISO 9001:2008 quality management standards
• ISTC series design for consistent dimensional accuracy across shaft collar applications

Compatibility

Designed as an OEM-style replacement or new-installation shaft collar for mechanical assemblies requiring a 5/16-24 threaded bore on shafts with an 11/16-inch outside collar diameter.

Installation Notes

Installation is performed by mechanics or machine technicians familiar with power transmission components. Always de-energize and lock out the equipment before servicing any shaft assembly. Thread the collar onto the shaft by hand to the desired position, then tighten using appropriate hand tools while confirming the collar does not contact adjacent bearings or housings. Verify shaft thread condition before installation to ensure full thread engagement.