S-97832A379 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Precise alignment and secure pivoting ensured by the standard shoulder with controlled diameter and length tolerances.
• Superior thread engagement and reliability from the Class 3A UNC coarse thread fit, minimizing the risk of loosening under vibration.
• High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for demanding applications.
• Secure, slip-resistant installation provided by the knurled hex socket head, allowing for high torque application.
• Simplified assembly and maintenance with the standard right-hand UNC thread, compatible with common tools and components.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring responsible material usage.

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to provide a robust and precise locating pin or axle in assemblies requiring rotational or linear movement. The 18-8 Stainless Steel material offers excellent resistance to rust and corrosion, making it suitable for machinery, automotive, and electronic applications exposed to moisture or chemicals. The Class 3A thread fit ensures a tight, secure connection that withstands vibrational stresses, while the unthreaded shoulder provides a precise bearing surface, eliminating the need for additional bushings and reducing assembly complexity. The knurled hex socket head allows for high-torque installation in confined spaces, enhancing assembly efficiency and reliability in automated production lines.

Specification Summary & Compliance

This shoulder screw features an 8-32 UNC coarse thread with a Class 3A fit for high precision. The shoulder diameter is 7/32" with a tolerance of -0.004" to -0.002", and the shoulder length is 3/8" with a tolerance of -0.005" to 0.005". The material is hardened to Rockwell B55 and meets mechanical properties of 70,000 psi tensile strength and 35,000 psi minimum shear strength. The product is manufactured to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant.