S-91273A294 1"-8 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and reducing maintenance costs.
• High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under heavy loads and stress.
• Precise assembly and alignment enabled by the 3" shoulder with standard fit, ensuring accurate component positioning.
• Secure and efficient installation with a 1/2" hex drive and knurled head, providing superior grip and torque application.
• Durable thread engagement from 1"-8 UNC coarse threads with Class 2A fit, resisting vibration loosening and ensuring long-term stability.
• Compliance with environmental regulations including RoHS 3 and REACH, making it safe for various global industrial applications.
• Consistent dimensional accuracy with tight shoulder tolerances, facilitating interchangeability and reducing assembly errors.

Professional Applications & Engineering Value

This shoulder screw is engineered to address critical challenges in machinery and equipment assembly, where precise alignment and high load-bearing capacity are essential. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, extending service life in demanding conditions like automotive, aerospace, and manufacturing systems. The 1"-8 UNC coarse thread with Class 2A fit ensures robust fastening that withstands vibrations, reducing the risk of joint failure. Combined with a 3" shoulder length and 1" shoulder diameter, it offers reliable pivoting and spacing functions in linkages, gears, and rotating assemblies. The knurled head and 1/2" hex drive allow for quick, secure installation, minimizing downtime and enhancing productivity in high-volume industrial settings.

Specification Summary & Compliance

This shoulder screw adheres to precise dimensional standards, including Class 2A thread fit for consistent engagement and UNC coarse threads for efficient assembly. Shoulder dimensions feature a diameter of 1" with a tolerance of -0.004" to -0.002" and a length of 3" with a tolerance of -0.005" to 0.005", ensuring reliable performance in precision applications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial use without hazardous substances.