S-8077A365 8-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh industrial environments and chemical exposure
• Enhanced durability and wear resistance from the Black Oxide finish, providing long-lasting performance and reduced maintenance
• High-strength reliability with 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding mechanical applications
• Precise thread engagement with Class 3A fit and UNC coarse threads ensuring secure, vibration-resistant fastening
• Easy installation and removal featuring a knurled socket head with 1/8" hex drive for superior grip and torque application
• Accurate component alignment due to the precisely machined shoulder with tight diameter and length tolerances
• Regulatory compliance assurance meeting ASME B18.3 standards, RoHS 3, and REACH for global industrial use

Professional Applications & Engineering Value

This 8-32 UNC thread shoulder screw delivers exceptional engineering value in precision assemblies where alignment and strength are critical. The 316 Stainless Steel material provides outstanding resistance to corrosion and oxidation, making it suitable for marine, chemical processing, and outdoor equipment applications. The Black Oxide finish enhances surface durability while reducing galling during installation. With its Class 3A thread fit and coarse UNC threads, it ensures reliable performance in high-vibration environments like machinery, automotive systems, and robotics. The knurled socket head allows for secure tool engagement, preventing slippage in tight spaces. These features combine to solve common industrial challenges such as misalignment, corrosion failure, and assembly inefficiency, providing a robust shoulder screw solution for OEM and MRO applications.

Specification Summary & Compliance

This shoulder screw features precision 8-32 UNC threads with Class 3A fit for accurate engagement and a 3/8" shoulder length with tight tolerances (-0.005" to 0.005"). The shoulder diameter is machined to 1/4" with a tolerance of -0.004" to -0.002" for consistent alignment. Manufactured to ASME B18.3 specifications, it ensures dimensional accuracy and performance reliability. The screw is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity for industrial and commercial use worldwide.