S-92183A351 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and reducing maintenance costs.
• Superior thread reliability with Class 3A fit and UNC coarse thread, ensuring secure, vibration-resistant fastening in demanding applications.
• High mechanical strength offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for dependable performance under load.
• Precision shoulder alignment with a 3/8" diameter and tight tolerances, providing accurate component positioning and smooth rotational movement.
• Easy installation and removal featuring a hex socket drive and knurled head for improved grip and tool engagement, speeding up assembly.
• Compliance with global regulations including RoHS 3 and REACH, ensuring safety and environmental standards for international supply chains.
• Durable and long-lasting with Rockwell B55 hardness, resisting wear and deformation over extended use.

Professional Applications & Engineering Value

This 1/4"-20 UNC shoulder screw is engineered to address common industrial challenges such as misalignment and component wear in machinery. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for applications in moist or chemical-exposed settings like automotive assemblies and food processing equipment. The coarse thread and Class 3A fit ensure quick, secure fastening with minimal risk of loosening under vibration, while the precision 3/8" shoulder diameter allows for exact bearing or bushing alignment, reducing friction and extending part life. With a hex socket drive and knurled head, it facilitates easy handling in tight spaces, enhancing efficiency in production lines and maintenance tasks.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for high precision. Dimensions include a shoulder diameter of 3/8" with tolerances from -0.004" to -0.002", and shoulder length tolerances from -0.002" to 0.002" for consistent performance. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use.