S-91273A613 5/16"-24 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
• Enhanced durability and wear resistance from the Black Oxide finish, providing added protection against abrasion.
• Precise alignment and secure pivoting enabled by the 5/16" shoulder diameter with controlled tolerances.
• High tensile and shear strength (70,000 psi and 35,000 psi respectively) for reliable performance under heavy loads.
• Accurate and secure fastening with Class 2A thread fit and UNF fine threads, reducing the risk of loosening.
• Easy installation and removal thanks to the hex socket drive and knurled head for improved grip.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw is engineered to address critical challenges in precision machinery and assembly lines. The Black Oxide finish not only enhances corrosion resistance but also reduces friction during operation, extending component life. With a 5/16"-24 UNF fine thread and Class 2A fit, it ensures tight tolerances in applications like rotating shafts, pivots, and guides, minimizing misalignment and vibration. The knurled head and hex drive facilitate quick maintenance in tight spaces, while the high tensile strength supports demanding industrial uses, from automotive to electronics manufacturing, where reliability is paramount.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit for precise UNF fine threading, with shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental safety and suitability for global industrial applications.