S-8077A424 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and black oxide finish, ideal for harsh industrial environments and extended service life.
• High-strength performance offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable load-bearing in demanding applications.
• Precision alignment and pivot functionality enabled by the 6" shoulder with tight diameter and length tolerances, reducing wear and simplifying assembly.
• Secure, high-precision thread engagement with Class 3A UNC coarse threads, ensuring consistent clamping force and vibration resistance.
• Easy installation and removal using a standard 1/8" hex drive and knurled socket head, providing a positive grip and reducing tool slippage.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, guaranteeing quality and environmental safety for global supply chains.
• Durable material hardness rated at Rockwell B79, maintaining structural integrity under repeated stress and mechanical loads.

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw is engineered to address critical alignment and durability challenges in industrial machinery, automation systems, and precision equipment. The 316 stainless steel material, combined with a black oxide finish, provides exceptional resistance to corrosion, chemicals, and high-moisture environments, reducing maintenance costs and downtime. The long, 6" precision shoulder acts as a reliable pivot or spacer, minimizing friction and wear on moving parts, while the Class 3A thread fit ensures secure fastening even under vibration. Its hex drive and knurled head facilitate quick assembly in confined spaces, making it a versatile choice for heavy-duty applications requiring both strength and precision.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit and UNC coarse thread standards, with a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005" for high dimensional accuracy. It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free from hazardous substances and suitable for use in regulated industries.