S-90807A114 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 140,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance provided by the black oxide finish, extending service life in harsh industrial environments
• Precise component alignment enabled by the 5/8" shoulder length with tight diameter tolerance for reduced assembly vibration
• Secure installation and removal through the knurled socket head with hex drive, preventing tool slippage during torque application
• Consistent thread engagement guaranteed by Class 3A thread fit, ensuring reliable fastening in precision assemblies
• Enhanced durability from Rockwell C32 hardness, maintaining structural integrity under repeated stress cycles
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting international environmental and safety requirements

Professional Applications & Engineering Value

This alloy steel shoulder screw delivers critical engineering solutions for industrial applications requiring precise component positioning and high-strength fastening. The 1/4"-20 UNC coarse thread with Class 3A fit ensures rapid assembly while maintaining vibration resistance in machinery, automation systems, and precision equipment. The black oxide finish provides essential corrosion protection for components exposed to industrial atmospheres or moderate chemical environments. With its 5/8" shoulder length maintaining precise tolerances, this screw acts as an axle or pivot point in rotating assemblies, eliminating the need for additional bushings and reducing component count. The knurled socket head with hex drive allows for high-torque installation in confined spaces, making it ideal for maintenance-heavy applications where repeated disassembly is required.

Specification Summary & Compliance

This precision shoulder screw features 1/4"-20 UNC coarse threads with Class 3A thread fit for superior engagement, combined with a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005" for precise component alignment. Manufactured from alloy steel with Rockwell C32 hardness and 140,000 psi tensile strength, it meets rigorous industrial standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.