S-92183A273 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications.
• Precise alignment and secure fit ensured by the Class 3A thread fit and standard shoulder, minimizing assembly play.
• Easy installation and removal with a knurled socket head and 1/8" hex drive, providing excellent grip and torque transmission.
• Versatile coarse UNC threading (1/4"-20) for quick assembly and robust performance in various materials.
• Durable and wear-resistant material with Rockwell B55 hardness, maintaining integrity under repeated use.
• Compliance with global standards including RoHS 3 and REACH, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This shoulder screw is engineered to address critical alignment and mechanical stability challenges in industrial assemblies. The 18-8 stainless steel provides excellent corrosion resistance, making it suitable for machinery, automotive, and electronic mounting systems exposed to moisture or chemicals. Its Class 3A precision fit and UNC coarse thread ensure tight tolerances and reliable fastening, reducing the risk of loosening under vibration. The knurled socket head with a hex drive allows for efficient installation in confined spaces, enhancing productivity in automated or manual assembly lines. By offering a robust shoulder diameter and consistent thread length, it serves as an ideal pivot, axle, or spacer in precision equipment, ensuring minimal deflection and extended service life.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A fit for high precision, featuring a thread size of 1/4"-20 and coarse spacing. Dimensions include a head diameter of 3/8", thread length of 3/8", and selectable shoulder lengths from 0.13" to 1.99" with tight tolerances (e.g., shoulder diameter tolerance of -0.004" to -0.002"). It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and safe industrial use.