S-90272A093 3-48 x 5/16" ASME B18.6.3 Steel Pan Head Phillips Screws
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 zinc-plated steel construction for extended service life in demanding environments
- Optimized driving efficiency through Phillips No. 1 drive design that prevents cam-out during installation
- Enhanced load distribution with rounded pan head profile that minimizes surface damage during tightening
- Maximum thread engagement from fully threaded UNC coarse pattern ensuring superior holding power
- Precision thread fit with Class 2A tolerance for reliable assembly and consistent performance
- Exceptional mechanical strength from Rockwell B70 hardness rating that resists deformation under stress
- Broad regulatory compliance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
Professional Applications & Engineering Value
These zinc-plated steel rounded head screws deliver critical performance advantages for industrial assembly applications where corrosion resistance and mechanical reliability are paramount. The combination of UNC coarse threading and fully threaded design ensures maximum pull-out resistance in softer materials while the Phillips drive system provides efficient installation without specialized tools. The rounded pan head profile distributes clamping force evenly, preventing surface damage to sensitive components. Engineered to ASME B18.6.3 standards, these 3-48 thread screws solve common fastening challenges in electronics enclosures, machinery guards, and light structural assemblies where vibration resistance and long-term durability are essential.
Specification Summary & Compliance
This 3-48 UNC screw features precision Class 2A thread fit with coarse thread spacing for optimal performance in industrial applications. Manufactured to exacting ASME B18.6.3 specifications with complete RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance. The inch-dimensioned fastener maintains strict dimensional tolerances throughout, including head diameter (0.193"), length (5/16"), and thread diameter (0.099") to ensure consistent performance and interchangeability across applications.
