S-91273A557 10-32 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with 18-8 stainless steel and black oxide finish, ideal for harsh industrial environments.
• Precise alignment and secure component positioning due to the 1-1/2" shoulder with tight tolerances, reducing assembly errors.
• High tensile strength of 70,000 psi and shear strength of 35,000 psi for reliable performance under heavy loads.
• Durable Rockwell B55 hardness ensures long-term wear resistance and thread integrity.
• Easy installation and removal with the hex drive and knurled head, providing a secure grip for tools.
• Fine UNF thread (10-32) and Class 2A fit for smooth engagement and vibration resistance in precision assemblies.
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and global market suitability.

Professional Applications & Engineering Value

This 10-32 UNF shoulder screw is engineered to address critical challenges in precision machinery, such as misalignment and component slippage. The 18-8 stainless steel construction, combined with a black oxide finish, offers superior corrosion resistance, making it ideal for applications in automotive, aerospace, and electronics where exposure to moisture and chemicals is common. The 1-1/2" shoulder provides a stable bearing surface, ensuring accurate part spacing and reducing wear in rotating assemblies. With its hex drive and knurled head, it allows for quick, tool-friendly installation, streamlining maintenance in high-volume production lines. This screw's fine thread design enhances grip in delicate components, preventing loosening under vibration, while its high strength supports demanding industrial shoulder screw applications.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit for precise tolerance, with a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". It conforms to UNF thread standards (10-32 size) and is manufactured from 18-8 stainless steel with a black oxide finish. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety requirements for industrial use.