S-90337A481 5/16"-18 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel and passivated finish, ideal for harsh industrial environments
• Precise alignment and smooth rotation ensured by the precisely machined shoulder with tight diameter and length tolerances
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing applications
• Easy installation in confined spaces with the low-profile socket head and 5/32" hex drive
• Secure and consistent threading provided by the UNC coarse thread with Class 2A fit for reliable assembly
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries
• Durable and long-lasting material properties resist wear and maintain integrity under repeated use

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and durability challenges in industrial machinery, automation systems, and precision instruments. The 18-8 Stainless Steel construction, combined with a passivated finish, provides excellent resistance to corrosion and oxidation, extending service life in demanding environments. The 1/2" shoulder length with precise tolerances ensures accurate component positioning, reducing wear and misalignment in rotating assemblies. Featuring a low-profile socket head and 5/16"-18 UNC coarse thread, it allows for efficient installation and removal in tight spaces, while the Class 2A thread fit guarantees consistent fastening performance. Ideal for applications requiring reliable shoulder screw functionality, such as pivots, guides, and spacers, this component delivers enhanced mechanical stability and operational efficiency.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit standards for consistent engagement and meets UNC coarse thread specifications. The shoulder diameter is maintained at 3/8" with a tight tolerance of -0.001" to 0", and the shoulder length is precisely controlled at 1/2" with a tolerance of 0" to 0.002". It is manufactured from 18-8 Stainless Steel with a passivated finish and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability for industrial use.