S-92944A136 5/16"-18 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high-stress conditions.
• Precise alignment and smooth rotation enabled by the 1-1/2" shoulder with controlled tolerances, reducing wear on mating components.
• Easy installation and removal with a 7/32" hex drive and coarse 5/16"-18 UNC threads, ensuring quick assembly in various applications.
• Guaranteed thread fit and interchangeability through Class 3A thread fit, providing consistent quality and reducing the risk of assembly errors.
• Durable and reliable performance backed by a Rockwell B55 hardness rating, ensuring the screw maintains integrity under repeated use.
• Compliance with environmental regulations including RoHS 3 and REACH, making it suitable for global markets and eco-conscious projects.

Professional Applications & Engineering Value

This stainless steel shoulder screw is engineered to address common challenges in precision machinery, such as misalignment and component wear. The 1-1/2" shoulder length provides a stable bearing surface for pivoting parts, while the Class 3A fit on the 5/16"-18 UNC coarse threads ensures secure fastening with minimal backlash. Made from 18-8 Stainless Steel, it offers excellent corrosion resistance, which is critical in industries like automation, packaging, and automotive assembly where exposure to moisture and chemicals is common. The flat head with standard profile and hex drive facilitate easy installation in confined spaces, reducing assembly time and improving overall efficiency in industrial applications.

Specification Summary & Compliance

This shoulder screw adheres to UNC coarse thread standards with a Class 3A thread fit for high precision. Dimensions include a shoulder diameter of 3/8" 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, ensuring it is free from hazardous substances and suitable for use in regulated environments.