S-92443A841 4-40 x 3/4" ASME B18.6.3 Brass Binding Head Slotted Screws
Brass Binding 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
- Exceptional corrosion resistance due to brass construction, ideal for harsh industrial environments
- Superior mechanical strength with 50,000 psi tensile strength and Rockwell B40 hardness for reliable, heavy-duty performance
- Precision fastening ensured by Class 2A thread fit and UNC coarse threads for quick, secure assembly
- Wide binding head design provides a larger bearing surface for secure component fastening and reduced surface damage
- Slotted drive compatibility allows for use with standard screwdrivers, simplifying installation and maintenance
- Full threading along the 3/4" length offers maximum grip and holding power in various material thicknesses
- Regulatory compliance with ASME B18.6.3, RoHS 3, and REACH ensures safety and environmental standards are met
Professional Applications & Engineering Value
These 4-40 UNC brass rounded head slotted screws deliver critical performance in demanding industrial and commercial applications. The brass material inherently resists corrosion and galling, preventing seizure and extending service life in electrical components, marine hardware, and plumbing systems. The wide binding head distributes clamping force effectively, protecting sensitive surfaces from indentation while the coarse UNC thread and Class 2A fit enable rapid installation with high resistance to vibration loosening. This combination solves common issues of part failure and maintenance downtime, providing a durable, fully threaded fastener engineered for long-term reliability in assembly lines, machinery, and electronic enclosures.
Specification Summary & Compliance
This product features a Class 2A thread fit per the Unified National Coarse (UNC) standard, ensuring precise dimensional accuracy and interchangeability. Manufacturing and quality adhere to the ASME B18.6.3 specification. The screws are fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a)-I for lead in brass alloys and are REACH (EC 1907/2006) compliant, meeting the latest environmental and safety regulations for industrial use.
