S-94836A213 4-40 x 3/8" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with chrome-plated 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
- Precision thread engagement with Class 2A UNC coarse threads ensuring consistent fit and reduced cross-threading risks
- Optimized drive efficiency through No. 1 Phillips drive design providing secure torque transmission and reduced cam-out
- Full-threaded design delivers maximum grip length and uniform stress distribution across the entire fastener
- Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
- Enhanced installation convenience with rounded pan head profile offering low-profile seating and improved aesthetic integration
Professional Applications & Engineering Value
These 4-40 UNC rounded pan head Phillips screws deliver critical engineering advantages in demanding applications where corrosion resistance and mechanical reliability are paramount. The chrome-plated 18-8 stainless steel construction provides exceptional protection against oxidation and chemical exposure, making these fasteners ideal for electronic enclosures, precision instrumentation, and marine equipment. The coarse thread design ensures rapid installation in various materials while maintaining Class 2A thread fit tolerances for consistent clamping force. With fully threaded coverage and 70,000 psi tensile strength, these screws prevent joint failure in vibration-prone environments, offering engineers a compliant solution that meets both performance specifications and environmental regulations.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 standards with Class 2A thread fit tolerances ensuring precision interchangeability. The UNC coarse thread profile (4-40) provides optimal engagement in various materials. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations guarantees safe usage in regulated industries. Mechanical properties include Rockwell B70 hardness and 70,000 psi tensile strength for demanding applications.
