S-93897A551 5/16"-18 Shoulder Screws

Key Features & Benefits at a Glance

• Corrosion-free performance with Nylon 6/6 plastic construction, eliminating rust and galvanic corrosion in sensitive environments
• Electrical insulation properties provide safe, non-conductive fastening for electrical assemblies and electronic components
• Wide temperature tolerance from -40° to 185°F ensures reliable performance across diverse operating conditions
• Precision shoulder alignment with 3/4" shoulder length for accurate component positioning and reduced assembly time
• Secure hex socket drive with 3/16" hex key provides reliable torque transmission and prevents stripping
• Standardized UNC coarse threading with Class 2A fit ensures consistent engagement and easy installation
• Environmental compliance with RoHS 3 regulations meets international safety and sustainability standards

Professional Applications & Engineering Value

This Nylon 6/6 plastic shoulder screw delivers exceptional engineering value where metal fasteners fail. The 5/16"-18 UNC coarse thread provides rapid assembly in plastics, wood, and soft materials, while the precision 3/4" shoulder length acts as a built-in spacer for accurate component alignment in rotating assemblies, pivots, and guide mechanisms. The hex socket drive ensures clean installation without protruding heads, ideal for compact industrial applications requiring flush surfaces. As an electrically insulating fastener, it prevents current leakage in electronic enclosures and eliminates galvanic corrosion in marine or chemical environments. The material's natural lubricity reduces wear on mating surfaces, extending equipment life in conveyor systems, packaging machinery, and medical devices where corrosion resistance and temperature stability are critical.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent engagement. Features UNC coarse threading (5/16"-18) with standard shoulder diameter and length tolerances. Compliant with RoHS 3 (2015/863/EU) environmental regulations, ensuring hazardous substance restriction adherence. The shoulder diameter maintains -0.012" to -0.002" tolerance while shoulder length holds ±0.015" precision for reliable component positioning.