S-91301A038 1"-8 x 1/2" Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide coating, extending service life in harsh industrial environments.
• Precise Class 3A thread fit ensures tight, secure fastening with minimal backlash for reliable component positioning.
• High Rockwell C45 hardness provides excellent wear resistance and maintains thread integrity under repeated adjustments.
• Headless hex drive design allows for flush mounting in confined spaces while enabling high torque application with a 9/16" drive.
• Coarse UNC threading facilitates quick installation and removal, reducing assembly time in production settings.
• Right-hand thread direction offers standard, intuitive tightening compatible with most industrial equipment.
• Full regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in global markets and sensitive applications.

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel set screw delivers critical performance in demanding applications where vibration resistance and positional accuracy are paramount. The headless design with hex drive solves space constraints in machinery guards, coupling assemblies, and precision fixtures, while the Class 3A UNC thread maintains consistent clamping force without loosening. Engineered for industrial set screws requirements, its coarse thread spacing and hardened construction prevent stripping in high-cycle operations, making it ideal for heavy-duty fasteners in automotive, manufacturing, and conveyor systems where reliability cannot be compromised.

Specification Summary & Compliance

Manufactured to inch system standards with 1"-8 UNC coarse threads and Class 3A thread fit for precision tolerance. The screw meets material and finish specifications for consistent performance, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety adherence in industrial supply chains.