S-91301A140 1/4"-28 x 1/8" Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide coating, extending service life in harsh industrial environments
• Exceptional thread precision with Class 3A fit for secure, vibration-resistant fastening in critical assemblies
• High-strength performance from Rockwell C45 hardened alloy steel, ensuring reliable load-bearing capacity
• Space-saving headless design allows flush mounting where clearance is limited
• Secure hex drive engagement with 1/8" drive size for precise torque application and reduced stripping risk
• Fine thread spacing provides enhanced adjustment control and superior holding power
• Full regulatory compliance with RoHS 3 and REACH standards for safe industrial use

Professional Applications & Engineering Value

Engineered for precision fastening in demanding industrial applications, this Black-Oxide alloy steel set screw delivers exceptional durability where corrosion resistance and mechanical strength are paramount. The Class 3A UNF fine thread configuration ensures tight tolerances and vibration resistance in machinery, automotive components, and precision equipment assemblies. The headless hex drive design provides reliable torque transmission while maintaining a low-profile installation, solving space constraint challenges in compact engineering designs. With Rockwell C45 hardness, it maintains structural integrity under repetitive stress, making it ideal for permanent fastening applications requiring long-term reliability.

Specification Summary & Compliance

This set screw features precision 1/4"-28 UNF fine threads with Class 3A thread fit for superior dimensional accuracy. Manufactured from hardened alloy steel with Black-Oxide surface treatment and Rockwell C45 hardness. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial safety standards.