S-91273A222 3/8"-24 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments.
• Enhanced torque application and reduced slipping thanks to the knurled hex socket head and 3/16" drive size.
• High load-bearing capacity and reliability with a tensile strength of 70,000 psi and a minimum shear strength of 35,000 psi.
• Precise and secure fit ensured by the Class 2A thread fit and standard shoulder fit for accurate alignment.
• Excellent wear resistance and durability from the Rockwell B55 hardness, reducing maintenance needs.
• Fine thread design for vibration resistance with 3/8"-24 UNF threads, providing stable performance in dynamic applications.
• Compliance with environmental and safety standards, including RoHS 3 and REACH, for global industrial use.

Professional Applications & Engineering Value

This stainless steel shoulder screw is engineered to address common industrial challenges, such as misalignment and component wear in machinery. The 18-8 Stainless Steel material offers excellent corrosion resistance, making it suitable for applications in moist or chemical-exposed environments, like automotive assemblies or food processing equipment. The knurled hex socket head provides a secure grip for easy installation and removal, reducing tool slippage and damage. With UNF fine threads and a Class 2A fit, it ensures tight tolerances and vibration resistance in precision mechanisms, such as pivots and bearings. Its high tensile strength and durable shoulder design support heavy loads, enhancing the longevity and reliability of industrial systems while meeting strict regulatory standards.

Specification Summary & Compliance

This shoulder screw features precise dimensions, including a thread size of 3/8"-24 UNF with Class 2A thread fit for accurate assembly. The shoulder diameter is 3/8" with a tolerance of -0.004" to -0.002", and the shoulder length is 5/8" with a tolerance of -0.005" to 0.005", ensuring consistent performance. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial applications.