S-94063A312 6-32 x 1/4" ASME B18.6.3 Tamper-Resistant Drilled Spanner Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for long-lasting performance in harsh environments
• High-strength reliability delivering 70,000 psi tensile strength and Rockwell B70 hardness for demanding industrial applications
• Precision flush mounting with 82° countersink angle and undercut flat head profile for secure, vibration-resistant installations
• Easy installation and removal featuring drilled spanner drive (No. 6) for secure tool engagement in confined spaces
• Consistent thread performance with Class 2A thread fit and UNC coarse threading ensuring reliable fastening in various materials
• Full-threaded design providing maximum grip length and superior holding power across the entire fastener length
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

These 6-32 UNC flat head screws deliver exceptional engineering value in applications where corrosion resistance, flush mounting, and high tensile strength are critical. The combination of 18-8 stainless steel with passivated finish provides superior protection against oxidation and chemical exposure, making them ideal for marine, food processing, and outdoor equipment applications. The 82° countersink angle and undercut head profile ensure secure seating without protrusion, preventing snagging and maintaining aerodynamic surfaces. The drilled spanner drive offers reliable torque transmission in space-constrained assemblies, while the fully threaded design maximizes engagement in thin materials and soft substrates. These features collectively address common industrial challenges including vibration loosening, material compatibility issues, and installation accessibility constraints.

Specification Summary & Compliance

This 1/4" length flat head screw features precision 6-32 UNC coarse threads with Class 2A thread fit tolerance for consistent performance. Manufacturing complies with ASME B18.6.3 specifications ensuring dimensional accuracy and mechanical properties. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) standards for chemical safety, with specific compliance for SVHC (Substance of Very High Concern) requirements as of June 14, 2023.