S-92944A133 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.
• Precise component alignment ensured by the 3/4" shoulder length with tight tolerances, reducing wear and simplifying assembly.
• High-strength performance delivering 70,000 psi tensile and 35,000 psi shear strength for reliable operation under heavy loads.
• Secure and repeatable fastening with Class 3A thread fit and coarse UNC thread, providing excellent vibration resistance.
• Easy installation and removal using the standard 7/32" hex drive, minimizing tool slip and damage.
• Consistent flush mounting with an 82° countersink angle and smooth flat head, ensuring a clean, professional finish.
• Compliance with stringent regulations including RoHS 3 and REACH, making it suitable for global markets and sensitive applications.

Professional Applications & Engineering Value

This shoulder screw is engineered to address critical alignment and durability challenges in industrial fastening. The 18-8 stainless steel material offers excellent resistance to corrosion and oxidation, making it perfect for machinery, automotive assemblies, and outdoor equipment. The 3/4" shoulder length with precise tolerances acts as a reliable pivot or spacer, preventing misalignment and reducing stress on moving parts. Combined with the Class 3A thread fit and coarse UNC thread, it ensures a tight, vibration-resistant connection that maintains integrity in high-stress environments. The flat head with 82° countersink allows for a seamless fit, enhancing both safety and aesthetics in precision engineering applications.

Specification Summary & Compliance

This shoulder screw features a 5/16"-18 UNC coarse thread with Class 3A fit for high precision and strength. Key dimensions include a shoulder diameter of 3/8" with a tolerance of -0.004" to -0.002" and a shoulder length of 3/4" with a tolerance of -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability. Manufactured to deliver consistent performance with a hardness of Rockwell B55, it meets rigorous industrial standards for demanding applications.