S-92451A128 5-40 x 1/2" ASME B18.6.3 Brass Slotted Flat Head Screws
Brass Slotted 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 from premium brass construction, ideal for humid or chemically aggressive environments
- Reliable mechanical performance with 50,000 psi tensile strength and Rockwell B50 hardness for durable, long-lasting fastening
- Precise thread engagement ensured by Class 2A fit and UNC coarse threading, reducing cross-threading risks during assembly
- Flush mounting capability with standard 82° countersink angle and flat head design for seamless surface integration
- Broad industrial compliance meeting ASME B18.6.3 specifications, RoHS 3, and REACH for global supply chain suitability
- Full-threaded design providing consistent grip along the entire 1/2" length for enhanced load distribution
- Slotted drive compatibility allowing easy installation with standard screwdrivers in maintenance and light assembly applications
Professional Applications & Engineering Value
These 5-40 UNC flat head slotted screws deliver critical performance in electrical enclosures, marine hardware, and precision instrumentation where brass material prevents galvanic corrosion while maintaining conductivity. The Class 2A thread fit and coarse UNC threading enable rapid assembly with reduced susceptibility to vibration loosening. Engineered with fully threaded 1/2" length and 82° countersink, they eliminate protrusions in flush-mount applications while distributing mechanical stresses evenly. The combination of 50,000 psi tensile strength and Rockwell B50 hardness ensures reliable fastening in thermal cycling environments where softer materials would deform.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerances and UNC coarse threads (5-40 size). Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety. Dimensional accuracy includes 0.125" thread diameter, 0.237" head diameter, and standard 82° countersink angle per industrial flat head profiles.
