S-90324A042 6-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for demanding load-bearing applications
• Precise alignment and spacing enabled by the 1/2" shoulder with tight diameter and length tolerances for consistent assembly fit
• Secure left-hand threading with Class 3A UNC coarse thread fit, preventing loosening in counter-rotational systems
• Easy installation and removal via the knurled socket head with hex drive, providing superior grip and torque application
• Enhanced durability with Rockwell B55 hardness, resisting wear and deformation under repeated use
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable industrial use

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw is engineered to address critical challenges in precision machinery and assembly systems. The 1/2" shoulder length with controlled tolerances ensures accurate component positioning, reducing misalignment and vibration in applications like rotating shafts, pivots, and guides. The left-hand UNC coarse thread provides reliable fastening in equipment where reverse rotation is a concern, such as in certain motors and conveyor systems. Combined with the knurled socket head for secure tool engagement, this screw minimizes installation errors and maintenance downtime. Its high tensile and shear strength supports heavy-duty operations in automotive, aerospace, and industrial automation, while the corrosion-resistant material ensures longevity even in moist or chemically exposed environments.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit for precise UNC coarse threading, with shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005" ensuring consistent performance. Manufactured to industrial standards for socket head shoulder screws, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global supply chains and environmentally conscious engineering projects.