S-91273A942 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and black oxide finish, ideal for harsh industrial environments.
• Enhanced durability and load capacity with 70,000 psi tensile strength and 35,000 psi shear strength, ensuring reliable performance under stress.
• Precise alignment and reduced wear thanks to the 5/8" shoulder length, providing stable bearing surfaces for rotating components.
• Easy installation and removal with a knurled socket head and 3/16" hex drive, offering superior grip and torque application.
• Accurate and secure thread engagement with Class 2A thread fit and UNC coarse threads, minimizing cross-threading risks.
• Rockwell B55 hardness for excellent wear resistance and long service life in demanding applications.
• Compliance with RoHS 3 and REACH regulations, ensuring environmental safety and meeting global industry standards.

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw is engineered to address critical challenges in precision machinery and assembly lines. The 18-8 stainless steel material combined with a black oxide finish provides exceptional corrosion resistance, making it suitable for automotive, aerospace, and manufacturing sectors where exposure to moisture and chemicals is common. The knurled socket head and hex drive design facilitate quick, secure fastening in tight spaces, reducing assembly time. The 5/8" shoulder length ensures precise component alignment, minimizing vibration and wear in rotating assemblies like bearings, pulleys, and gears. With a Class 2A thread fit and coarse UNC threads, it offers reliable holding power and ease of use in high-vibration environments, enhancing overall equipment reliability and reducing maintenance costs.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit tolerances for consistent performance, with UNC coarse threads (3/8"-16) ensuring compatibility with standard components. Manufacturing conforms to precise dimensional controls, including shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing it meets stringent environmental and safety standards for industrial use.