S-90604A307 2-56 x 5/8" ASME B18.6.3 Stainless Steel Pan Head Combination Phillips/Slotted Screws
Stainless Steel Pan Head Combination Phillips/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 from 18-8 Stainless Steel and passivated finish, ideal for harsh environments
- High mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for reliable, long-term performance
- Efficient installation and removal with the dual Phillips/Slotted drive, reducing tool slippage and assembly time
- Wide compatibility and secure fit due to the UNC coarse thread and Class 2A thread fit, minimizing cross-threading risks
- Full-length threading ensures maximum grip and uniform load distribution along the entire 5/8" length
- Rounded pan head design provides a low-profile, finished appearance while offering good bearing surface
- Compliance with major industry standards including ASME B18.6.3, RoHS, and REACH for assured quality and safety
Professional Applications & Engineering Value
These 2-56 UNC fully threaded rounded head screws are engineered to address common industrial challenges such as vibration loosening and corrosive degradation. Manufactured from 18-8 Stainless Steel and featuring a passivated finish, they deliver exceptional resistance to rust and chemicals, making them ideal for electronics assembly, machinery, and outdoor equipment. The coarse UNC thread and Class 2A fit ensure quick, reliable fastening in a variety of materials, reducing installation errors. The combination of high tensile strength and a rounded pan head provides a durable, low-profile solution that maintains integrity under stress, supporting efficient maintenance and long service life in demanding B2B applications.
Specification Summary & Compliance
This product adheres to precise dimensional standards, including a Class 2A thread fit for consistent assembly and UNC coarse threading per inch system requirements. Manufacturing and quality are governed by ASME B18.6.3 specifications. The screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring they are free of hazardous substances and safe for various industrial and consumer applications.
