S-90337A426 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 Stainless Steel construction ensures long-term durability in harsh industrial environments, reducing replacement frequency.
• Precise Class 2A thread fit guarantees smooth assembly and secure fastening, minimizing the risk of cross-threading in automated or manual applications.
• Low-profile socket head with hex drive allows for compact installations and easy access in confined spaces, improving assembly efficiency.
• 70,000 psi tensile strength and Rockwell B55 hardness provide reliable load-bearing capacity and resistance to deformation under stress.
• 3/16" shoulder length with precise shoulder fit ensures accurate component alignment and reduces wear in pivoting or rotating mechanisms.
• RoHS 3 and REACH compliance meets international environmental regulations, ensuring safe use in global supply chains.
• 8-32 UNC coarse thread design offers quick installation and high resistance to vibration loosening in dynamic applications.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and durability challenges in industrial machinery. The 18-8 Stainless Steel material provides excellent corrosion resistance, ideal for environments exposed to moisture or chemicals. The low-profile socket head design, combined with a 3/16" shoulder length, ensures precise component positioning in assemblies such as rotating shafts, linkages, and bearing mounts. The UNC coarse thread and Class 2A thread fit facilitate rapid, secure fastening while maintaining alignment accuracy, reducing assembly time and minimizing mechanical play. Commonly used in automation equipment, conveyor systems, and precision instruments, this screw enhances operational reliability by withstanding repetitive motion and 70,000 psi tensile loads without failure.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit tolerances for consistent threading performance. The shoulder diameter is maintained at 3/16" with a tight tolerance of -0.001" to 0", while the shoulder length is precisely controlled at 1" with a tolerance of 0" to 0.002". Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, it ensures environmental safety and regulatory acceptance for industrial applications.