S-8077A423 10-24 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 performance offering 70,000 psi tensile strength and 35,000 psi shear strength for reliable load-bearing applications
• Precise thread engagement with Class 3A fit and UNC coarse threads, ensuring secure fastening and vibration resistance
• Easy installation and removal thanks to the hex socket drive and knurled head design, improving assembly efficiency
• Accurate shoulder alignment with controlled diameter and length tolerances, enabling precise component positioning
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, guaranteeing quality and environmental safety

Professional Applications & Engineering Value

This 10-24 UNC thread shoulder screw is engineered to address critical challenges in precision assembly and machinery. The 316 Stainless Steel material provides exceptional resistance to corrosion and oxidation, making it suitable for applications in marine, chemical processing, and food equipment where moisture and chemicals are prevalent. The Black Oxide finish not only enhances aesthetic appeal but also adds a protective layer that reduces galling and wear during repeated use. With a Class 3A thread fit and coarse UNC threads, it ensures tight, reliable connections that resist loosening under vibration, common in automotive, aerospace, and industrial automation systems. The knurled head and hex drive facilitate quick tool engagement, reducing installation time and errors in high-volume production environments. Ideal for pivot points, rotating assemblies, and precision mounting, this screw delivers consistent performance where dimensional accuracy and strength are paramount.

Specification Summary & Compliance

This shoulder screw adheres to precise dimensional standards, including a Class 3A thread fit for superior engagement and UNC coarse threads (10-24 size) with a diameter of 0.19". The shoulder features a diameter of 1/4" (tolerance: -0.004" to -0.002") and length of 5" (tolerance: -0.005" to 0.005"), ensuring exact alignment in assemblies. Manufactured to ASME B18.3 specifications, it meets rigorous mechanical properties such as Rockwell B79 hardness and 70,000 psi tensile strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in regulated industries without hazardous substances.