S-91772A917 6-40 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
- 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 thread engagement through Class 2A fit and UNF fine threads, ensuring secure fastening in critical applications
- Optimized drive efficiency with No. 2 Phillips drive, providing excellent torque transfer and reduced cam-out risk
- Versatile pan head design with standard rounded profile offering broad bearing surface for stable component mounting
- Full thread coverage along the 1/4" length maximizes grip strength and distribution across connected materials
- Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
Professional Applications & Engineering Value
These 6-40 UNF fine thread screws deliver critical performance where vibration resistance and precise fastening are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against chemical exposure and atmospheric corrosion, extending service life in manufacturing equipment, electronic enclosures, and marine components. The combination of Class 2A thread fit and fully threaded design ensures uniform stress distribution, preventing loosening under dynamic loads. The pan head with Phillips drive facilitates quick installation in confined spaces while maintaining high clamp force. Engineered to withstand demanding conditions, these screws solve common industrial challenges including material fatigue, galvanic corrosion, and maintenance accessibility in rounded head screw applications.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 standards with Class 2A thread fit precision and UNF fine thread specifications. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features right-hand threading, 1/4" length, and full threading for consistent performance across industrial applications.
