S-94361A349 5/16"-24 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with 140,000 psi tensile strength and Rockwell C32 hardness, ideal for high-stress industrial environments.
• Precise alignment and reduced wear thanks to the Class 3A thread fit and standard shoulder fit, ensuring accurate component positioning.
• Superior corrosion resistance provided by the black oxide finish, extending service life in demanding applications.
• Enhanced grip and easy installation with a knurled socket head and 3/16" hex drive, allowing for secure tool engagement and reduced slippage.
• Reliable performance in fine-thread applications due to the 5/16"-24 UNF thread, offering improved adjustment and vibration resistance.
• Strict dimensional control with tight shoulder diameter and length tolerances, guaranteeing consistent fit and function in precision assemblies.
• Compliance with environmental regulations, meeting RoHS 3 and REACH standards for safe and sustainable use.

Professional Applications & Engineering Value

This alloy steel shoulder screw is engineered to address critical challenges in machinery and precision equipment. The black oxide finish not only enhances corrosion resistance but also reduces friction and galling in high-cycle operations. Featuring a 5/16"-24 UNF fine thread and Class 3A fit, it ensures minimal backlash and secure fastening in applications requiring fine adjustment, such as in automated assemblies, jigs, and rotating shafts. The knurled socket head provides a non-slip surface for reliable torque application, while the robust 140,000 psi tensile strength supports heavy loads without failure. Ideal for use in CNC machinery, automotive fixtures, and aerospace components, this screw delivers long-term reliability and reduces maintenance needs.

Specification Summary & Compliance

This shoulder screw adheres to UNF thread standards with a Class 3A thread fit for high precision. Dimensions include a shoulder diameter of 3/8" (tolerance: -0.004" to -0.002") and shoulder length of 1-7/8" (tolerance: -0.005" to 0.005"), ensuring consistent performance. It is manufactured to meet RoHS 3 (2015/863/EU) with exemption 6(a) and REACH (EC 1907/2006) compliance, supporting environmentally responsible sourcing and usage in industrial settings.