S-8077A519 3-48 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 added protection against rust and reducing galling.
• Precise alignment and secure positioning thanks to the Class 3A thread fit and standard shoulder, ensuring reliable assembly in high-tolerance applications.
• High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength, supporting heavy-duty mechanical loads.
• Secure, non-slip installation facilitated by the knurled head texture and 5/64" hex socket drive, allowing for firm tool grip and efficient torque application.
• Consistent dimensional accuracy with tight shoulder diameter and length tolerances, enabling repeatable fits in precision machinery.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use in regulated industries.

Professional Applications & Engineering Value

This 3-48 UNC shoulder screw is engineered to address critical challenges in precision assembly and machinery design. The 316 stainless steel material offers exceptional resistance to corrosion and oxidation, making it suitable for applications in marine, chemical processing, and food equipment where moisture and aggressive substances are present. The black oxide finish not only enhances aesthetic appeal but also minimizes friction and thread seizure during installation. With a Class 3A thread fit and coarse UNC thread, this fastener ensures quick, secure engagement in components requiring exact alignment, such as rotating shafts, bearings, and linkages. The knurled head and hex socket drive provide reliable torque transmission, reducing the risk of stripping and improving maintenance efficiency in automated systems. Ideal for use in industrial machinery, automotive assemblies, and electronic enclosures, this shoulder screw delivers long-term reliability and performance under demanding operational conditions.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for precise, interference-free engagement. Dimensional tolerances include a shoulder diameter of 1/8" with a tolerance of -0.004" to -0.002" and a shoulder length of 3/8" with a tolerance of -0.005" to 0.005", ensuring consistent fit in precision applications. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environments with strict environmental and safety requirements.