S-90272A610 1/4"-28 x 3/8" 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
- High tensile strength of 60,000 psi ensures reliable fastening under significant mechanical stress
- Precise Class 2A thread fit provides consistent engagement and reduces cross-threading risks
- No. 3 Phillips drive offers efficient installation with common tools while minimizing cam-out
- Fine UNF threading delivers enhanced vibration resistance and superior holding power
- Rockwell B70 hardness maintains structural integrity through repeated installation cycles
- Full threading along entire 3/8" length enables maximum adjustability and grip depth
Professional Applications & Engineering Value
This zinc-plated steel rounded head screw with 1/4"-28 UNF fine threading addresses critical industrial fastening challenges where vibration resistance and corrosion protection are paramount. The combination of 60,000 psi tensile strength and Rockwell B70 hardness ensures reliable performance in machinery assembly, electrical enclosures, and automotive components where mechanical stress and environmental factors threaten joint integrity. The pan head design with No. 3 Phillips drive provides a low-profile solution that distributes clamping force effectively while accommodating standard installation tools. Engineered for precision applications requiring Class 2A thread fit, these fully threaded screws maintain consistent performance in production environments where fastener failure can lead to costly downtime.
Specification Summary & Compliance
This product features 1/4"-28 UNF fine threads with Class 2A dimensional tolerance ensuring precise fitment. Manufacturing complies with ASME B18.6.3 specifications for dimensional consistency and performance standards. The screw is fully RoHS 3 (2015/863/EU) compliant and meets REACH (EC 1907/2006) regulations regarding substance restrictions, making it suitable for global industrial applications with strict environmental requirements.
