S-8077A758 1/2"-13 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel and black oxide finish, ideal for harsh environments
• High tensile strength of 70,000 psi ensures reliable load-bearing capacity in demanding applications
• Precision Class 3A thread fit provides consistent, secure fastening with minimal backlash
• Knurled head design offers enhanced grip for manual adjustments without tools
• Hex socket drive (5/16") allows for easy installation and removal with standard tools
• Coarse UNC threading enables quick assembly and reduced cross-threading risks
• Compliance with ASME B18.3, RoHS, and REACH guarantees quality and environmental safety standards

Professional Applications & Engineering Value

This shoulder screw is engineered to address critical alignment and rotational stability challenges in industrial machinery. The 316 stainless steel construction, combined with a black oxide finish, provides exceptional resistance to corrosion, making it suitable for marine, chemical processing, and outdoor equipment. The Class 3A thread fit and precise shoulder dimensions ensure minimal play and accurate component positioning, reducing wear in high-cycle applications like robotics, conveyor systems, and automotive assemblies. Its high tensile and shear strength supports heavy loads, while the knurled head facilitates quick manual adjustments in tight spaces, enhancing maintenance efficiency without compromising durability.

Specification Summary & Compliance

This shoulder screw features a 1/2"-13 UNC coarse thread with Class 3A fit for tight tolerances, a shoulder diameter of 5/8" with tolerance of -0.004" to -0.002", and a shoulder length of 2 3/4" with tolerance of -0.005" to 0.005". It meets ASME B18.3 specifications for dimensional accuracy and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability.