S-92480A872 1/4"-20 x 3/8" ASME B18.6.3 Brass Phillips Flat Head Screws
Brass Phillips Flat Head 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 brass construction for long-lasting performance in demanding environments
- Optimized drive engagement with Phillips No. 3 drive for efficient installation and reduced cam-out risk
- Reliable thread performance with Class 2A thread fit ensuring consistent assembly and vibration resistance
- Enhanced flush mounting with 82° countersink angle and undercut flat head profile for secure, clean installations
- High mechanical strength with 50,000 psi tensile strength and Rockwell B50 hardness for durable fastening
- Full-threaded design providing maximum grip and load distribution across the entire fastener length
- Regulatory compliance meeting ASME B18.6.3 standards plus RoHS 3 and REACH for global industrial use
Professional Applications & Engineering Value
These 1/4"-20 UNC brass flat head screws deliver exceptional value in industrial assemblies where corrosion resistance and reliable fastening are critical. The brass material inherently resists rust and galvanic corrosion, making these Phillips drive screws ideal for electrical enclosures, marine equipment, and plumbing systems. The undercut flat head profile with 82° countersink angle ensures flush mounting without protrusion, while the coarse UNC threads provide quick installation and superior holding power in softer materials. With full threading and Class 2A thread fit, these screws maintain consistent clamping force even under vibration, solving common loosening issues in machinery and structural applications.
Specification Summary & Compliance
This flat head screw features precise Class 2A thread fit with 1/4"-20 UNC coarse threads and right-hand direction. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for hazardous substances. Thread diameter measures 0.25" with 0.477" head diameter and 3/8" length, ensuring interchangeability with standard components.
