S-90276A119 4-40 x 1 1/2" ASME B18.6.3 Steel Round Head Slotted Screws
Steel Round 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
- Enhanced corrosion resistance with zinc plating for extended service life in various industrial environments
- Reliable fastening performance with 60,000 psi tensile strength and Rockwell B69 hardness for demanding applications
- Easy installation and removal using standard slotted screwdrivers with the rounded head design
- Secure thread engagement with Class 2A thread fit and UNC coarse threads for vibration resistance
- Full-length threading provides consistent holding power along the entire 1½" length
- Industry-standard compliance with ASME B18.6.3 specifications for guaranteed dimensional accuracy
- Environmental responsibility with RoHS 3 and REACH compliance for safe industrial use
Professional Applications & Engineering Value
These 4-40 UNC zinc-plated steel rounded head screws deliver exceptional engineering value across multiple industrial sectors. The combination of zinc-plated steel construction and Rockwell B69 hardness ensures reliable performance in machinery assembly, electrical enclosures, and automotive components where corrosion resistance and mechanical strength are critical. The slotted drive design with rounded head profile facilitates quick installation in confined spaces while maintaining professional appearance. The coarse UNC threading and Class 2A thread fit provide superior vibration resistance in dynamic applications, preventing loosening under stress. These fully threaded fasteners are engineered to maintain 60,000 psi tensile strength in demanding environments, making them ideal for permanent installations requiring long-term reliability.
Specification Summary & Compliance
This 1½" length screw features precise Class 2A thread fit with 4-40 UNC coarse threads in right-hand direction, manufactured to exact ASME B18.6.3 dimensional standards. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe industrial use. All dimensions conform to inch system measurements with 0.211" head diameter and 0.086" head height for consistent performance across applications.
