S-91772A089 3-48 x 1/8" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for secure, vibration-resistant fastening
• Optimized thread engagement through Class 2A fit UNC coarse threads, providing reliable installation and reduced cross-threading risks
• Efficient installation with No. 1 Phillips drive and pan head design, enabling quick assembly with standard tools
• Full-threaded coverage along the 1/8" length maximizes grip strength and distributes load evenly
• Regulatory compliance with ASME B18.6.3, RoHS 3, and REACH standards, ensuring safety and environmental responsibility
• Versatile industrial compatibility with right-hand threading meeting common machinery and equipment requirements

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 3-48 UNC pan head machine screws deliver critical performance advantages where corrosion resistance and mechanical reliability are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against oxidation and chemical exposure, making these Phillips drive screws ideal for machinery, electronic enclosures, and marine applications. The coarse UNC threading with Class 2A fit ensures rapid assembly with reduced susceptibility to cross-threading, while the fully threaded design maximizes surface contact for superior load distribution. With 70,000 psi tensile strength, these industrial fasteners maintain integrity under vibration and dynamic loads, solving common failure points in manufacturing equipment, automotive components, and precision instruments where corrosion resistant screws are essential for long-term operational safety.

Specification Summary & Compliance

This machine screw features precision 3-48 UNC coarse threads with Class 2A dimensional tolerance for consistent fit and performance. Manufacturing complies with ASME B18.6.3 specifications for dimensional standards and quality assurance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for hazardous substance restrictions. Thread direction is standardized right-hand with fully threaded coverage along the 1/8" length, ensuring reliable fastening across industrial applications.