S-8077A444 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 and marine environments
• Enhanced durability and wear resistance from the black oxide finish, providing long-lasting performance
• Precise alignment and secure mounting ensured by the Class 3A thread fit and standard shoulder fit
• High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for demanding applications
• Easy installation and removal with hex socket drive and knurled head for improved grip
• Reliable coarse threading using UNC 10-24 threads for quick assembly and vibration resistance
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for quality assurance

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw with black oxide finish is engineered to address critical challenges in precision machinery and industrial assemblies. The UNC coarse threading and Class 3A thread fit ensure tight tolerances and reliable fastening in high-vibration environments, reducing the risk of loosening. The knurled head and hex drive facilitate easy handling and torque application, while the shoulder design provides accurate component alignment in applications like rotating shafts, linkages, and bearing mounts. Its high tensile and shear strength makes it suitable for heavy-duty use in automotive, aerospace, and manufacturing sectors, where corrosion resistance and long-term reliability are paramount.

Specification Summary & Compliance

This shoulder screw adheres to ASME B18.3 specifications, with Class 3A thread fit for precise engagement and UNC 10-24 coarse threading. It features a shoulder diameter of 1/4" with tight tolerances (-0.004" to -0.002") and a shoulder length of 1 5/8" (±0.005"). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.