S-91772A912 5-40 x 1 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
- Superior corrosion resistance with passivated 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 threading with Class 2A fit and UNC coarse threads ensuring secure fastening and vibration resistance
- Optimized drive engagement featuring Phillips No. 2 drive for efficient installation and reduced cam-out risk
- Full-threaded 1-1/4" length providing maximum grip range and versatility across various material thicknesses
- Standard pan head design with rounded profile offering clean aesthetics and adequate bearing surface
- Regulatory compliance meeting ASME B18.6.3 specifications and international environmental standards
Professional Applications & Engineering Value
Engineered for demanding industrial machine assembly and equipment manufacturing, these 5-40 UNC machine screws deliver critical performance advantages. The passivated 18-8 stainless steel construction provides exceptional corrosion resistance in challenging environments where moisture or chemicals are present. The combination of coarse UNC threading and Class 2A thread fit ensures rapid installation and reliable clamping force in metal-to-metal applications. The rounded pan head with Phillips No. 2 drive offers both aesthetic appeal and practical installation efficiency, while the fully threaded design maximizes fastening flexibility across varying material thicknesses. These screws are particularly valuable in electrical enclosures, machinery frames, and precision instrument assembly where consistent performance and regulatory compliance are mandatory.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit for precision dimensional accuracy. Features 5-40 UNC coarse threads with complete threading along the 1-1/4" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global markets. The passivated 18-8 stainless steel construction meets industry standards for corrosion resistance and mechanical properties.
