S-91273A315 1/2"-13 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced grip and torque application thanks to the knurled hex socket head design
• High tensile strength of 70,000 psi ensures reliable performance under significant load and stress
• Precision alignment and secure mounting provided by the 3/4" shoulder diameter with tight tolerances
• Easy assembly and disassembly with the coarse 1/2"-13 UNC thread and Class 2A fit
• Exceptional durability backed by Rockwell B55 hardness for long service life
• Compliance with RoHS 3 and REACH regulations for safe and environmentally responsible use

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw is engineered to address critical alignment and mounting challenges in demanding industrial settings. The 1/2"-13 UNC coarse thread and hex socket head facilitate quick, secure fastening, while the precisely machined 3/4" shoulder diameter ensures accurate component positioning, reducing wear and misalignment in machinery, pivots, and rotating assemblies. The knurled head texture enhances grip during installation, even in oily conditions. With a 70,000 psi tensile strength and Rockwell B55 hardness, it withstands high stress and repetitive motion, making it a reliable choice for industrial shoulder screw applications where precision and durability are paramount.

Specification Summary & Compliance

This shoulder screw features a Class 2A thread fit for standard assembly, with shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005" ensuring precise dimensional accuracy. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing compliance with environmental and safety standards for industrial use.