S-91054A489 10-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion and wear resistance with 18-8 Stainless Steel construction and TiCN coating, extending service life in demanding environments.
• Exceptional precision and alignment due to the Class 2A thread fit and precisely machined 1-1/2" shoulder, ensuring accurate component positioning.
• High-strength performance with a tensile strength of 70,000 psi and Rockwell B55 hardness, providing reliable load-bearing capacity.
• Secure and efficient installation using the 1/8" hex drive socket head, allowing for high torque application without stripping.
• Fine thread engagement with the 10-32 UNF thread, offering improved vibration resistance and a tighter seal in assemblies.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safe use in various industrial sectors.
• Versatile right-hand thread design compatible with standard UNF components, simplifying procurement and replacement.

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 base material provides excellent corrosion resistance, while the TiCN coating significantly enhances surface hardness and reduces wear in high-friction applications. The 1-1/2" shoulder length with minimal tolerances ensures precise location and rotation of parts such as gears, pulleys, and linkages, minimizing misalignment and premature failure. The 10-32 UNF fine thread and Class 2A fit guarantee secure fastening in dynamic environments where vibration loosening is a concern. Ideal for use in automation, automotive, and precision equipment assembly, this screw delivers reliable performance and reduces maintenance downtime.

Specification Summary & Compliance

This shoulder screw adheres to UNF thread standards with a Class 2A thread fit for consistent, precise engagement. The shoulder diameter is manufactured to a tight tolerance of -0.002" to 0", and the shoulder length tolerance is held between 0" to 0.003" to ensure exacting dimensional accuracy. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industries.