S-90298A795 1/2"-13 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh industrial environments
• Precise alignment and reduced wear thanks to the 5/8" shoulder diameter with tight ±0.001" tolerance for stable component positioning
• High-strength, durable performance with Rockwell B55 hardness, ensuring reliable load-bearing in heavy-duty applications
• Secure, vibration-resistant fastening achieved through Class 3A thread fit and coarse 1/2"-13 UNC thread for quick assembly
• Easy installation and removal with hex drive and knurled head, providing excellent grip and torque application
• Long-term reliability backed by compliance with ASME B18.3, RoHS 3, and REACH standards for safety and quality
• Versatile industrial use with a 1" shoulder length and standard shoulder fit, suitable for various machinery setups

Professional Applications & Engineering Value

This stainless steel shoulder screw is engineered to address critical challenges in precision machinery and industrial equipment. The 18-8 stainless steel material combined with a passivated finish offers exceptional corrosion resistance, reducing maintenance in humid or chemically aggressive environments. The 5/8" shoulder diameter with minimal tolerance ensures exact alignment of components, minimizing wear and preventing misalignment in assemblies like rotating shafts or bearings. With a Class 3A thread fit and coarse UNC thread, it provides robust, vibration-resistant connections that withstand dynamic loads. Ideal for applications in industrial machinery and automation systems, this screw enhances operational efficiency by delivering consistent performance and durability under stress.

Specification Summary & Compliance

This shoulder screw features precise dimensions, including a 1/2"-13 UNC thread with Class 3A fit for high accuracy, and a shoulder diameter tolerance of -0.001" to 0.001" for reliable assembly. It adheres to ASME B18.3 manufacturing standards, ensuring consistent quality and interchangeability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial and electronic applications without hazardous substances.