S-94066A148 6-32 x 1/2" ASME B18.6.3 Tamper-Resistant Drilled Spanner Stainless Steel Pan Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Exceptional mechanical strength with 80,000 PSI tensile strength and Rockwell B96 hardness for reliable, long-term fastening
• Secure tamper-resistant installation through drilled spanner drive design, preventing unauthorized removal
• Optimized thread engagement with UNC coarse threading and Class 2A fit ensuring quick assembly and vibration resistance
• Enhanced clearance and aesthetic appeal with rounded pan head profile, suitable for applications where protrusion must be minimized
• Full regulatory compliance meeting ASME B18.6.3 manufacturing standards, RoHS 3, and REACH environmental regulations
• Complete thread coverage with fully threaded 1/2" length for maximum grip across the entire fastener

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these rounded head spanner drive screws deliver critical performance advantages where corrosion resistance and tamper-proof security are paramount. The 18-8 stainless steel material combined with passivated finish creates a robust barrier against chemical exposure and atmospheric corrosion, significantly extending service life in manufacturing equipment, marine hardware, and food processing machinery. The drilled spanner drive system provides secure installation while deterring unauthorized access, making these UNC threaded fasteners ideal for permanent assemblies. With coarse threading ensuring rapid installation and 80,000 PSI tensile strength maintaining joint integrity under dynamic loads, these screws solve common engineering challenges of vibration loosening and material degradation in harsh operating conditions.

Specification Summary & Compliance

This 6-32 x 1/2" screw features precision UNC coarse threads with Class 2A dimensional tolerance for consistent fit and performance. Manufacturing strictly adheres to ASME B18.6.3 mechanical standards, ensuring dimensional accuracy and interchangeability. The fastener is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety, making it suitable for global industrial supply chains and environmentally conscious applications.