S-90283A114 4-40 x 7/8" ASME B18.6.3 Steel Pan Head Slotted Screws
Steel 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 with zinc-plated steel construction, extending service life in demanding industrial environments
- High tensile strength of 60,000 psi ensures reliable fastening under substantial mechanical stress
- Rockwell B60 hardness provides excellent durability and resistance to wear during installation and use
- Class 2A thread fit offers consistent, smooth assembly with standard UNC coarse threading for quick installation
- Fully threaded design maximizes grip and load distribution across the entire fastener length
- Slotted pan head design allows for easy installation with standard screwdrivers while maintaining a low-profile appearance
- Comprehensive compliance with ASME B18.6.3, RoHS 3, and REACH ensures quality and environmental responsibility
Professional Applications & Engineering Value
These 4-40 UNC zinc-plated steel rounded head screws deliver exceptional performance in industrial settings where corrosion resistance and mechanical reliability are paramount. The combination of 60,000 psi tensile strength and Rockwell B60 hardness ensures these fully threaded fasteners maintain integrity under vibration and load stress. The slotted pan head design provides straightforward installation in confined spaces while the coarse UNC threading enables rapid assembly in various materials. Ideal for machinery, electrical enclosures, and equipment manufacturing, these ASME B18.6.3 compliant screws solve critical fastening challenges where durability and regulatory compliance are essential.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (4-40 size), these screws maintain dimensional accuracy per ASME B18.6.3 specifications. The 7/8" length and fully threaded construction ensure consistent performance across applications. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and material safety standards for industrial use.
