S-90337A154 2-56 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional Corrosion Resistance: Crafted from 18-8 Stainless Steel with a passivated finish for long-lasting performance in harsh environments, reducing maintenance and replacement costs.
• High Strength & Durability: Offers a robust 70,000 psi tensile strength and Rockwell B55 hardness to withstand significant mechanical stress and prevent fastener failure.
• Space-Saving & Secure Fastening: The low-profile socket head with a 5/64" hex drive provides a compact design for tight spaces while ensuring a secure, tamper-resistant connection.
• Precision Alignment & Pivot Function: Features a precise shoulder (3/32" diameter, 5/32" length) with tight tolerances for accurate component location, alignment, and smooth rotational movement.
• Reliable & Easy Assembly: The Class 2A thread fit and coarse UNC thread facilitate quick and easy installation, reducing assembly time and improving production efficiency.
• Global Regulatory Compliance: Fully compliant with RoHS 3 and REACH regulations, ensuring safety and environmental responsibility for international markets.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to solve critical alignment and pivot challenges in demanding industrial applications. The 18-8 stainless steel construction and passivated finish provide superior corrosion resistance, making it ideal for machinery, electronics, and automotive assemblies exposed to moisture or chemicals. The low-profile socket head with a 5/64" hex drive allows for secure fastening in confined spaces where clearance is limited. Its precisely machined shoulder acts as a reliable datum for locating parts, ensuring accurate alignment in jigs, fixtures, and linkages, while the 2-56 UNC thread with a Class 2A fit guarantees consistent, vibration-resistant connections. This combination of material integrity, dimensional accuracy, and functional design delivers enhanced reliability and longevity, reducing downtime and maintenance in precision mechanical systems.

Specification Summary & Compliance

This shoulder screw adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and a precise shoulder with diameter tolerance of -0.001" to 0" and length tolerance of 0" to 0.002". It conforms to UNC thread standards with a right-hand, coarse thread spacing. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use.