S-90807A137 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional durability with 140,000 psi tensile strength and Rockwell C32 hardness for reliable performance in high-stress applications
• Superior corrosion resistance through black oxide finish, extending service life in demanding industrial environments
• Precision alignment with Class 3A thread fit ensuring secure fastening and reduced vibration-related issues
• Enhanced grip and handling from knurled head design, facilitating easier installation and maintenance
• Optimized for heavy-duty use with coarse UNC threads providing superior holding power in various materials
• Versatile mounting capability featuring 1-1/4" shoulder length for precise component spacing and alignment
• Compliance assurance meeting RoHS 3 and REACH regulations for safe use across multiple industries

Professional Applications & Engineering Value

This alloy steel shoulder screw delivers critical engineering solutions where precision alignment and high strength are paramount. The black oxide finish provides essential corrosion protection in harsh environments, while the Class 3A thread fit ensures consistent performance in automated assembly systems. The knurled socket head with hex drive allows for secure tool engagement during installation, reducing slippage and damage risks. Ideal for precision machinery, automotive assemblies, and industrial equipment, this 3/8"-16 UNC shoulder screw maintains dimensional stability under heavy loads, thanks to its 140,000 psi tensile strength. The generous 1-1/4" shoulder length accommodates various component thicknesses, making it exceptionally versatile for jigs, fixtures, and rotating mechanisms where exact positioning is critical.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 3A thread fit and UNC coarse threading. Features include: 3/8"-16 thread size, 1/2" thread length, 1-1/4" shoulder length with tight tolerance control (-0.005" to 0.005"), and 3/8" shoulder diameter with controlled tolerance (-0.004" to -0.002"). This shoulder screw complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The combination of alloy steel material and black oxide surface treatment meets industrial requirements for strength, durability, and corrosion resistance in demanding applications.