S-8077A354 3/8"-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and black oxide finish for extended service life in harsh environments
• Precise alignment and secure positioning through Class 3A thread fit and controlled shoulder diameter tolerances
• Exceptional mechanical strength delivering 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
• Enhanced installation control with knurled socket head providing superior grip during torque application
• Industry-standard compatibility meeting ASME B18.3 specifications for reliable performance and interchangeability
• Environmental compliance assurance with RoHS 3 and REACH compliance for global manufacturing applications
• Optimized for fine-thread applications with UNF 3/8"-24 thread providing superior vibration resistance

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw with black oxide finish addresses critical engineering challenges in precision assembly applications. The combination of Class 3A thread fit and controlled shoulder tolerances ensures precise component alignment while minimizing play in machinery, jigs, and rotating assemblies. The UNF fine thread configuration provides enhanced vibration resistance compared to coarse threads, making it ideal for high-speed equipment and precision instruments. The knurled socket head with hex drive allows for secure tool engagement in confined spaces, reducing installation errors. With its corrosion-resistant properties and high mechanical strength, this shoulder screw delivers reliable performance in demanding environments including marine applications, chemical processing equipment, and food machinery where both precision and durability are paramount.

Specification Summary & Compliance

This precision shoulder screw features Class 3A thread fit with UNF 3/8"-24 threading and maintains tight shoulder diameter tolerance (-0.004" to -0.002") and shoulder length tolerance (-0.005" to 0.005"). Manufactured to ASME B18.3 specifications with material hardness of Rockwell B79. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications and restricted substance requirements.