S-8077A155 2-56 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high stress.
• Precise thread engagement with Class 3A fit and UNC coarse threading, ensuring secure fastening and vibration resistance.
• Enhanced durability and wear resistance from the black oxide finish and Rockwell B79 hardness.
• Easy installation and removal with a 5/64" hex drive and knurled head for improved grip and torque application.
• Accurate shoulder dimensions with tight tolerances for consistent alignment and spacing in assemblies.
• Compliance with environmental regulations, meeting RoHS 3 and REACH standards for safe and sustainable use.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in industrial settings, such as corrosion, mechanical stress, and assembly precision. The black oxide finish enhances surface protection, reducing wear and extending component life in demanding applications like machinery, automotive systems, and electronic enclosures. Its UNC coarse thread and Class 3A thread fit provide robust, vibration-resistant connections, while the precise shoulder diameter and length ensure accurate part alignment. Ideal for high-stress environments, this fastener delivers reliable performance, minimizing maintenance and downtime in industrial shoulder screw applications.

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 tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.