S-92480A108 4-40 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, ideal for harsh industrial environments and electrical applications
- Reliable fastening performance with 50,000 psi tensile strength and Rockwell B50 hardness for durable connections
- Easy installation and removal with Phillips No. 1 drive and standard flat head profile for flush mounting
- Precise thread engagement with Class 2A UNC coarse threads ensuring consistent fit and vibration resistance
- Optimized for countersunk applications with 82° angle for seamless flush finishing in various materials
- Full threading along 3/8" length provides maximum grip and load distribution across the entire fastener
- Compliance with international standards including ASME B18.6.3 for guaranteed dimensional accuracy
Professional Applications & Engineering Value
These 4-40 UNC brass flat head screws deliver exceptional value in precision engineering applications where corrosion resistance and electrical conductivity are critical. The brass material prevents galvanic corrosion while maintaining excellent machinability, making these Phillips drive screws ideal for electronic enclosures, marine components, and plumbing systems. The fully threaded design ensures maximum holding power in thin materials, while the 82° countersink angle provides clean, flush installations that meet aesthetic and functional requirements. With coarse thread spacing and Class 2A thread fit, these fasteners resist loosening under vibration, making them perfect for assembly lines and machinery where reliability is paramount.
Specification Summary & Compliance
These screws feature precision UNC thread form with Class 2A tolerance ensuring consistent fit and performance. Manufactured to ASME B18.6.3 specifications for dimensional accuracy, they comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The combination of 50,000 psi tensile strength and Rockwell B50 hardness guarantees mechanical reliability in demanding industrial applications.
