S-97768A434 3/8"-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and black oxide finish, ideal for harsh industrial environments
• Precise component alignment through Class 3A thread fit and standard shoulder fit, ensuring reliable assembly performance
• Superior mechanical strength with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
• Enhanced grip and torque application with knurled head texture and 1/4" hex drive socket head design
• Fine thread engagement with 3/8"-24 UNF right-hand threads providing superior vibration resistance
• Extended service life through Rockwell B55 hardness and compliance with ASME B18.3 manufacturing standards
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for global market acceptance

Professional Applications & Engineering Value

This black oxide 18-8 stainless steel shoulder screw delivers critical performance in precision machinery and industrial equipment where alignment accuracy and corrosion resistance are paramount. The 1½" shoulder length with tight tolerance control (-0.005" to 0.005") ensures precise component spacing in assemblies, while the Class 3A thread fit and UNF fine threading provide superior vibration resistance in high-stress applications. The knurled socket head design enables secure tool engagement during installation, preventing slippage in confined spaces. Engineered for rotating assemblies, pivoting mechanisms, and precision guiding systems, this shoulder screw maintains dimensional stability under loads up to 70,000 psi tensile strength, making it ideal for manufacturing equipment, automotive systems, and industrial automation where reliability cannot be compromised.

Specification Summary & Compliance

This precision shoulder screw features 3/8"-24 UNF fine threads with Class 3A thread fit for superior engagement. The shoulder maintains 1/2" diameter with tolerance of -0.004" to -0.002" and 1½" length with -0.005" to 0.005" tolerance. Manufactured to ASME B18.3 specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring both mechanical precision and regulatory acceptance for global industrial applications.