Thomson Industries Qsss 3/8 L 6 Linear Shaft Stainless

Product Description

The THOMSON INDUSTRIES QSSS 3/8 L 6 is a standard round linear shaft designed for use in linear motion systems and precision mechanical assemblies. Machined from 440-C stainless steel and hardened to 50-55 Rockwell C, this shaft delivers the surface hardness and corrosion resistance required for demanding slide and bearing applications. The shaft measures 0.375 inches in nominal diameter with a tight diameter tolerance of 0.3740 to 0.3745 inches and an overall length of 6 inches. Mechanical technicians and machine builders install this shaft type in linear bearing blocks, bushings, and slide assemblies across industrial and automated equipment.

This shaft is suited for light-duty to medium-duty linear motion applications in both industrial and commercial machinery. Its 6-inch length and 0.375-inch diameter make it a practical fit for compact actuator assemblies, carriage guides, and custom linear stages where precise shaft tolerancing is required. The 440-C stainless material grade makes it appropriate for environments with moisture exposure or mild chemical contact, where carbon steel shafting would be vulnerable to surface degradation that could compromise bearing performance.

Key Features

• 440-C stainless steel construction for corrosion resistance in wet or harsh environments
• Hardened to 50-55 Rockwell C for wear resistance under linear bearing loads
• Tight diameter tolerance of 0.3740 to 0.3745 inches for precision bearing fit
• 6 inches overall length for compact linear motion assemblies
• Standard shaft profile compatible with common linear bearing and bushing bores

Compatibility

Designed as an OEM-style replacement or build component for standard linear motion assemblies using 3/8-inch round linear shafting with 440-C stainless steel and Rockwell C hardness requirements.

Installation Notes

Installation is typically performed by mechanical technicians or machine builders working on linear motion systems. Before servicing or replacing linear shafting, de-energize all actuators and motion systems and secure any load-bearing components. Use appropriate bore gauges or micrometers to verify bearing and bushing clearances against the shaft diameter tolerance before final assembly. Follow equipment manufacturer guidelines and applicable machinery safety standards during installation.