S-90283A843 2-56 x 1/8" 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 harsh industrial environments
- High tensile strength of 60,000 psi ensures reliable fastening under demanding mechanical loads
- Rockwell B60 hardness provides excellent durability and resistance to wear during installation and use
- Class 2A thread fit offers optimal assembly tolerance for smooth installation while maintaining secure connections
- Fully threaded design maximizes grip strength and load distribution across the entire fastener length
- Slotted drive compatibility allows for quick installation with standard tools while maintaining precise torque control
- Coarse UNC threading enables rapid assembly and superior resistance to vibration loosening in dynamic applications
Professional Applications & Engineering Value
These zinc-plated steel rounded head screws with 2-56 UNC coarse threading deliver exceptional engineering value in industrial applications where corrosion resistance and mechanical reliability are critical. The pan head design with slotted drive provides optimal bearing surface for secure fastening in electronic enclosures, machinery components, and precision equipment assemblies. The combination of 60,000 psi tensile strength and Rockwell B60 hardness ensures these fasteners withstand vibration, thermal cycling, and mechanical stress without compromising joint integrity. The fully threaded configuration maximizes engagement in thin materials and blind holes, solving common challenges in compact assembly designs while the zinc plating effectively prevents galvanic corrosion in mixed-material applications.
Specification Summary & Compliance
This 2-56 UNC screw features precise Class 2A thread fit per ASME standards with dimensions of 1/8" length, 0.167" head diameter, and 0.053" head height. Manufacturing and quality control strictly adhere to ASME B18.6.3 specifications for dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility in industrial supply chains.
