S-93897A425 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Corrosion-resistant Nylon 6/6 construction ensures reliable performance in harsh environments without rust or galvanic corrosion
• Precision Class 2A thread fit provides consistent engagement and vibration resistance in assembly applications
• Wide temperature tolerance (-40° to 185°F) maintains structural integrity across diverse operating conditions
• Hex socket drive design enables secure installation with standard tools while preventing stripping
• RoHS 3 compliance meets international environmental standards for restricted substances
• Dimensional stability with controlled shoulder diameter and length tolerances ensures precise component alignment
• Electrical insulation properties of nylon prevent current conduction in sensitive electronic applications

Professional Applications & Engineering Value

Engineered for precision alignment and electrical isolation, these Nylon 6/6 plastic shoulder screws solve critical challenges in industrial assembly. The 1/4"-20 UNC coarse thread with Class 2A fit ensures rapid installation while maintaining vibration resistance in automated equipment. The 5/16" shoulder diameter and 7/16" shoulder length provide exact positioning for rotating components, bearings, and linkages without metal-to-metal contact. The hex socket drive prevents cam-out during torque application, while the smooth head texture eliminates particulate generation in cleanroom environments. Ideal for electrical enclosures, conveyor systems, and medical devices where temperature resistance and chemical inertness are paramount.

Specification Summary & Compliance

This inch system shoulder screw features precision UNC coarse threads with Class 2A tolerance for consistent fit. The shoulder maintains tight dimensional control with diameter tolerance of -0.012" to -0.002" and length tolerance of -0.015" to 0.015". Manufactured in compliance with RoHS 3 (2015/863/EU) regulations, ensuring absence of restricted hazardous substances. The right-hand thread direction and standard socket head profile adhere to industrial fastener conventions for interchangeability and reliable performance across applications.