S-93897A433 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Nylon 6/6 plastic construction, eliminating rust and galvanic compatibility issues in harsh environments
• Precise component alignment through the 5/8" shoulder length with tight diameter tolerance, ensuring accurate pivot points and spacing
• High torque application capability with the hex socket drive design, preventing cam-out and enabling secure installation in confined spaces
• Excellent temperature stability across a wide operating range from -40° to 185°F, maintaining dimensional integrity in varying conditions
• Reliable thread engagement with Class 2A UNC coarse threads, providing quick assembly and vibration resistance
• Environmental compliance assurance with RoHS 3 certification, meeting international regulatory standards for hazardous substances
• Reduced part weight and electrical insulation from nylon material, ideal for applications requiring lightweight non-conductive components

Professional Applications & Engineering Value

This Nylon 6/6 plastic shoulder screw delivers critical engineering solutions where metal fasteners fail. The 1/4"-20 UNC coarse thread configuration combined with the precision 5/8" shoulder length creates an optimal solution for precision alignment in machinery, electrical insulation in electronic assemblies, and corrosion resistance in chemical processing equipment. The hex socket drive enables high-torque installation without damaging the polymer material, while the smooth head texture prevents marring of adjacent components. Engineers specify this shoulder screw for applications requiring exact pivot points, electrical isolation, or chemical resistance where traditional metal fasteners would corrode, conduct electricity, or add unnecessary weight.

Specification Summary & Compliance

This shoulder screw maintains Class 2A thread fit per UNC standards with shoulder diameter tolerance of -0.012" to -0.002" and shoulder length tolerance of -0.015" to 0.015". Manufactured from Nylon 6/6 plastic with right-hand 1/4"-20 UNC coarse threads and standard shoulder fit. The product is RoHS 3 (2015/863/EU) compliant and operates within a temperature range of -40° to 185°F, ensuring regulatory adherence and performance reliability across industrial applications.