S-97768A425 3/8"-16 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and black oxide finish, ideal for harsh industrial environments
• Precise component alignment with 1" shoulder length and tight tolerances (±0.005"), ensuring accurate positioning in machinery assemblies
• High-load capacity delivering 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
• Reliable thread engagement with Class 3A UNC coarse threads providing superior fit and vibration resistance
• Easy installation and maintenance featuring hex socket drive and knurled head for secure tool grip
• Industry compliance meeting ASME B18.3 specifications and environmental standards (RoHS 3, REACH)
• Durable performance with Rockwell B55 hardness for long service life in repetitive assembly operations

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw delivers exceptional engineering value in precision applications where component alignment and structural integrity are critical. The 18-8 stainless steel construction with black oxide finish provides excellent corrosion resistance in manufacturing environments exposed to moisture and chemicals. The precision-machined 1" shoulder with tight diameter tolerance (-0.004" to -0.002") ensures accurate bearing surfaces for rotating components in automation equipment and machinery. The Class 3A thread fit with UNC coarse threads maintains secure fastening under vibration, while the hex socket drive and knurled head facilitate installation in confined spaces. These features make it ideal for precision positioning in robotic arms, conveyor systems, and industrial equipment requiring reliable shoulder screw performance.

Specification Summary & Compliance

This shoulder screw features 3/8"-16 UNC coarse threads with Class 3A fit for precision threading applications. The shoulder maintains tight dimensional control with diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". Manufacturing complies with ASME B18.3 specifications, and the fastener is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant for environmental safety standards.