S-8077A377 10-32 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
• Precise component alignment ensured by the knurled socket head and Class 3A thread fit for reliable assembly
• High mechanical strength delivering 70,000 psi tensile and 35,000 psi shear strength for demanding applications
• Secure hex drive engagement with 1/8" drive size preventing cam-out during installation
• Consistent dimensional accuracy with tight shoulder diameter and length tolerances for repeatable performance
• Environmental compliance meeting RoHS 3 and REACH standards for global manufacturing requirements
• Optimized fine thread design with 10-32 UNF threads providing superior vibration resistance in dynamic applications

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw with black oxide finish addresses critical engineering challenges in precision machinery and industrial equipment. The combination of Class 3A thread fit and knurled socket head ensures exact shoulder alignment while preventing rotational slippage during torque application. The 10-32 UNF fine threads maintain secure fastening in high-vibration environments common in automation systems, robotics, and precision instruments. The shoulder diameter tolerance of -0.004" to -0.002" guarantees consistent bearing surfaces for rotating components, eliminating play and reducing wear in mechanical assemblies. These industrial shoulder screws provide reliable performance in corrosive conditions while meeting stringent ASME B18.3 specifications for dimensional consistency and mechanical properties.

Specification Summary & Compliance

Manufactured to ASME B18.3 standards with Class 3A thread fit for precision UNF threading. Features include shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Mechanical properties include Rockwell B79 hardness and verified compliance with specified tensile and shear strength requirements.