S-92183A123 3-48 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Exceptional mechanical strength with 70,000 psi tensile strength and 35,000 psi minimum shear strength, ensuring reliable performance under high-stress conditions.
• Precise Class 3A thread fit for secure, vibration-resistant assemblies and consistent mating with threaded components.
• Enhanced grip and anti-slip handling from the knurled socket head, facilitating easier installation and removal in tight spaces.
• Efficient torque transmission via the 5/64" hex drive, reducing the risk of tool slippage and head stripping during fastening.
• Versatile shoulder design with standard fit and customizable lengths (2"-3.99"), providing precise alignment and acting as a pivot or spacer in assemblies.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets.

Professional Applications & Engineering Value

These precision 3-48 UNC thread shoulder screws are engineered to address critical challenges in mechanical assemblies requiring exact alignment and robust fastening. The 18-8 stainless steel material offers excellent resistance to oxidation and corrosion, making these screws ideal for applications in machinery, automotive systems, and electronic enclosures exposed to moisture or chemicals. The coarse UNC thread and Class 3A fit ensure tight tolerances and reduce the risk of loosening under vibration, while the knurled socket head with a hex drive allows for secure tool engagement, minimizing installation errors. The shoulder acts as a dependable bearing surface or pivot, enhancing stability in rotating parts and linkages. This combination of high tensile strength and precision manufacturing provides long-term reliability, reducing maintenance needs and downtime in demanding industrial settings.

Specification Summary & Compliance

This product adheres to UNC thread standards with a Class 3A fit for precise thread engagement. Dimensions include a thread size of 3-48, head diameter of 5/32", and shoulder diameter tolerance of -0.004" to -0.002". Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety. The screws feature a right-hand thread direction and are made from 18-8 stainless steel with a hardness of Rockwell B55, confirming consistent quality and performance in industrial applications.