S-91375A019 1-64 x 3/16" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating for extended service life in harsh industrial environments
• Exceptional thread precision with Class 3A fit ensures secure, vibration-resistant fastening in critical applications
• High-strength performance from Rockwell C45 hardened alloy steel maintains integrity under heavy loads
• Secure cup point design provides excellent bite and resistance to loosening in permanent assemblies
• Compact headless construction allows for flush mounting in space-constrained applications
• Easy installation and removal with standardized 0.035" hex drive for efficient maintenance operations
• Reliable coarse threading (UNC 1-64) enables quick assembly and disassembly in production environments

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers exceptional engineering value through its specialized material composition and precision manufacturing. The Rockwell C45 hardness rating ensures the screw maintains structural integrity under repetitive stress and vibration, while the protective black-oxide surface treatment significantly enhances corrosion resistance in demanding industrial settings. The cup point design provides superior biting action into shaft materials, preventing slippage in power transmission components, gear assemblies, and precision machinery. Engineered with Class 3A thread fit and UNC coarse threading, this fastener offers reliable performance in automotive, manufacturing, and aerospace applications where vibration resistance and precise positioning are critical. The headless configuration with hex drive enables flush mounting while maintaining accessibility for maintenance in confined spaces.

Specification Summary & Compliance

This precision 1-64 UNC set screw features exact dimensional control with Class 3A thread fit tolerances and coarse thread spacing for optimal engagement. Manufacturing complies with ASME B18.3 specifications and ASTM F912 standards ensuring consistent quality and performance. The product fully meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations regarding chemical safety, making it suitable for global industrial applications requiring environmental compliance.