S-94361A338 5/16"-24 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Precision Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in critical assemblies.
• Black oxide finish offers enhanced corrosion resistance and a durable, non-reflective surface ideal for industrial environments.
• Knurled socket head with hex drive allows for secure tool grip and easy installation, even in confined spaces or with gloved hands.
• Alloy steel construction with Rockwell C32 hardness delivers excellent wear resistance and long-term durability, extending service life.
• Fine thread spacing (UNF) ensures tighter fastening and improved load distribution compared to coarse threads.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and meets global industry standards for hazardous substance restrictions.

Professional Applications & Engineering Value

This 5/16"-24 UNF shoulder screw is engineered to address common industrial challenges such as misalignment, component wear, and vibrational loosening. The alloy steel material, combined with Rockwell C32 hardness, provides exceptional strength and resistance to deformation under heavy loads. The black oxide finish not only protects against rust but also reduces galling during installation. With its fine thread spacing and Class 3A thread fit, it ensures precise alignment and secure fastening in machinery, automotive assemblies, and precision equipment where socket head hex drive accessibility is crucial. The standard shoulder fit and knurled head further enhance stability, making it ideal for pivots, axles, and guiding components in high-cycle applications.

Specification Summary & Compliance

This shoulder screw adheres to UNF thread standards with a Class 3A thread fit for high precision. Dimensions include a thread size of 5/16"-24, shoulder diameter of 3/8" (tolerance: -0.004" to -0.002"), and shoulder length of 7/16" (tolerance: -0.005" to 0.005"). It is manufactured to meet RoHS 3 (2015/863/EU) compliance with exemption 6(a) for lead in steel and is REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations.