S-8077A513 3-48 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel material, ideal for harsh environments like marine or chemical processing.
• Enhanced durability and reduced galling thanks to the Black Oxide finish, providing added wear resistance and a sleek appearance.
• High tensile and shear strength (70,000 psi tensile, 35,000 psi shear) ensures reliable performance under heavy loads and vibration.
• Precise alignment and smooth rotation with a 1-1/2" shoulder length and standard shoulder fit, minimizing part movement in assemblies.
• Easy installation and removal using a 5/64" hex drive and knurled head for improved grip, reducing tool slippage.
• Accurate thread engagement with Class 3A fit and coarse UNC threads, offering secure fastening in high-stress applications.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This 3-48 UNC shoulder screw is engineered to address common industrial challenges such as misalignment and corrosion in precision machinery. Made from 316 Stainless Steel with a Black Oxide finish, it resists rust and chemicals, extending service life in demanding settings like automotive, aerospace, and manufacturing equipment. The socket head design with a hex drive allows for compact installation in tight spaces, while the knurled texture enhances handling. Its Class 3A thread fit and coarse UNC threads ensure quick, reliable fastening, reducing assembly time and maintenance costs. Ideal for pivots, shafts, and guides, this screw provides consistent performance where strength and precision are critical.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A fit for high precision, ensuring tight tolerances in thread diameter and spacing. Dimensions include a shoulder diameter of 1/8" with a tolerance of -0.004" to -0.002" and a shoulder length of 1-1/2" with a tolerance of -0.005" to 0.005". It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free from hazardous substances, and is manufactured to deliver consistent hardness (Rockwell B79) and mechanical properties for industrial use.