S-90807A145 1/2"-13 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional durability with 140,000 psi tensile strength and Rockwell C32 hardness for reliable performance in high-stress applications
• Superior corrosion resistance through black oxide finish, extending service life in demanding industrial environments
• Precise thread engagement with Class 3A fit ensuring secure fastening and vibration resistance in critical assemblies
• Easy installation and removal featuring 1/4" hex drive socket head with knurled texture for improved grip and torque application
• Accurate shoulder positioning with tight diameter and length tolerances for precise component alignment and spacing
• Industry-standard compatibility with 1/2"-13 UNC coarse threads suitable for most industrial equipment and machinery
• Environmental compliance meeting RoHS 3 and REACH regulations for safe use in regulated industries

Professional Applications & Engineering Value

This alloy steel shoulder screw delivers exceptional engineering value in applications requiring precise component alignment and high load-bearing capacity. The black oxide finish provides reliable corrosion protection in industrial environments where exposure to moisture and chemicals is common. The Class 3A thread fit ensures minimal play and superior vibration resistance, making it ideal for precision machinery, automotive assemblies, and manufacturing equipment where loosening could cause operational failures. The knurled socket head with 1/4" hex drive allows for efficient installation in confined spaces while the UNC coarse threads facilitate quick assembly in production environments. With its 140,000 psi tensile strength, this shoulder screw maintains structural integrity under heavy rotational and axial loads, solving critical fastening challenges in demanding industrial applications.

Specification Summary & Compliance

This shoulder screw features precision Class 3A thread fit with 1/2"-13 UNC coarse threads, ensuring tight tolerances for industrial applications. The shoulder diameter maintains -0.004" to -0.002" tolerance while the shoulder length holds -0.005" to 0.005" tolerance for precise component alignment. Manufactured to industry standards with Rockwell C32 hardness and 140,000 psi tensile strength, this fastener is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial use.