S-91249A050 2-56 x 1/4" 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
- Exceptional corrosion resistance with Black-Oxide coated 18-8 Stainless Steel for reliable performance in demanding environments
- Superior mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for high-load applications
- Quick installation and removal with No. 1 Phillips drive and rounded pan head design
- Secure thread engagement with Class 2A thread fit and UNC coarse threads for vibration resistance
- Maximum holding power through fully threaded design for consistent fastening along entire length
- Industry-standard compatibility meeting ASME B18.6.3 specifications for reliable interchangeability
- Environmental compliance with RoHS 3 and REACH regulations for global manufacturing applications
Professional Applications & Engineering Value
These 2-56 UNC coarse thread screws with Black-Oxide 18-8 Stainless Steel construction provide essential corrosion protection while maintaining high tensile strength for critical industrial assemblies. The rounded pan head with Phillips drive offers optimal torque transmission and flush mounting capabilities, making them ideal for electronics enclosures, machinery panels, and precision equipment where vibration resistance and environmental durability are paramount. The fully threaded right-hand design ensures maximum grip length and uniform stress distribution, solving common challenges of loosening under dynamic loads while meeting strict industry standards for dimensional accuracy and material performance.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 standards with Class 2A thread fit for precise dimensional tolerances. Features UNC coarse threads (2-56 size) with right-hand threading direction. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 1/4" length and standardized thread form ensure consistent performance and interchangeability across industrial applications requiring reliable fastening solutions.
