S-92446A106 4-40 x 1/4" ASME B18.6.3 Brass Pan Head Slotted Screws
Brass Pan Head Slotted 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 from high-quality brass construction, ideal for humid or corrosive environments
- Excellent mechanical strength with 50,000 psi tensile strength and Rockwell B40 hardness for reliable load-bearing performance
- Precision thread engagement with Class 2A fit UNC coarse threads ensuring secure fastening and vibration resistance
- Easy manual installation through slotted drive design compatible with standard screwdrivers
- Optimized head design with rounded pan profile providing attractive finish and reduced snagging
- Full threading coverage along the 1/4" length for maximum grip strength in various material thicknesses
- Regulatory compliance assurance meeting ASME B18.6.3, RoHS 3, and REACH standards for quality and safety
Professional Applications & Engineering Value
These 4-40 UNC brass pan head slotted screws deliver exceptional performance in electrical assemblies, marine equipment, and precision instruments where corrosion resistance is critical. The brass material naturally resists oxidation and galvanic corrosion, while the Rockwell B40 hardness maintains thread integrity under repeated use. The coarse UNC thread pattern provides faster installation and superior holding power in softer materials, and the slotted drive style offers reliable manual assembly where power tools aren't practical. These fully threaded fasteners ensure consistent clamping force across the entire engagement length, making them ideal for panel mounting, chassis assembly, and decorative hardware applications requiring both functionality and aesthetic appeal.
Specification Summary & Compliance
This rounded head screw features precise Class 2A thread fit according to UNC standards with 4-40 thread size and 1/4" length. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for hazardous substances. The right-hand thread direction and fully threaded design ensure standard installation practices and maximum utility across industrial applications.
