S-93897A658 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Corrosion-resistant Nylon 6/6 construction eliminates rust and galvanic corrosion, ideal for harsh environments and electrical applications
• Precision-machined shoulder provides accurate alignment and acts as a pivot, bearing surface, or spacer, reducing assembly time and parts count
• Wide operating temperature range from -40° to 185° F ensures reliable performance in both extreme cold and moderate heat
• Socket head with 1/4" hex drive allows for high-torque installation and a clean, low-profile finish in confined spaces
• Coarse 3/8"-16 UNC thread with Class 2A fit ensures rapid assembly and secure fastening in plastics and soft materials
• RoHS 3 compliance guarantees the fastener meets stringent environmental regulations for global manufacturing
• Smooth head texture and standard profile prevents damage to contact surfaces and provides a professional appearance

Professional Applications & Engineering Value

This Nylon 6/6 plastic shoulder screw is engineered to solve critical challenges in precision assembly. The 1/2" shoulder diameter and controlled tolerances provide a secure locating dowel for components in machinery, eliminating misalignment. The non-conductive and non-magnetic properties of the material make it indispensable in electronics, medical devices, and food processing equipment, where metal fasteners could cause interference or contamination. The 3/8"-16 UNC coarse thread offers excellent pull-out resistance in parent materials, while the socket head hex drive facilitates secure installation with standard tools. Its inherent corrosion resistance removes the need for plating or coating, providing a maintenance-free, durable fastener solution for long-term performance.

Specification Summary & Compliance

This shoulder screw adheres to inch system measurements with a Class 2A thread fit for consistent, reliable engagement. The shoulder features a diameter of 1/2" with a tolerance of -0.012" to -0.002" and a length of 3/8" with a tolerance of -0.015" to 0.015" for precision locating. The fastener is manufactured to UNC coarse thread standards and is fully RoHS 3 (2015/863/EU) Compliant, ensuring it is free of hazardous substances for use in regulated industries.