S-90272A399 1/4"-20 x 1 5/8" ASME B18.6.3 Steel Pan Head Phillips Screws
Steel Pan Head Phillips 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 for extended service life in demanding environments
- High tensile strength of 60,000 psi ensures reliable fastening under substantial mechanical stress
- Rockwell B70 hardness provides excellent durability and resistance to wear during installation and use
- Class 2A thread fit with UNC coarse threading enables quick assembly and secure holding power
- Phillips pan head design offers a rounded profile for reduced snagging and No. 3 drive compatibility for common tools
- Full threading along the 1-5/8" length allows for maximum adjustability and grip in various material thicknesses
- Compliance with ASME B18.6.3, RoHS 3, and REACH ensures quality, safety, and environmental standards are met
Professional Applications & Engineering Value
This zinc-plated steel Phillips pan head screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. The 1/4"-20 UNC coarse thread design provides excellent grip in metals and plastics, reducing the risk of stripping and enabling faster installation in high-volume production lines. With a 60,000 psi tensile strength and Rockwell B70 hardness, it maintains integrity under dynamic loads, making it ideal for machinery, automotive components, and electrical enclosures. The fully threaded shank and rounded head profile minimize protrusion risks while ensuring consistent clamping force, enhancing safety and reliability in industrial applications.
Specification Summary & Compliance
This screw features precise Class 2A thread fit per UNC standards, ensuring consistent engagement and ease of assembly. It is manufactured in accordance with ASME B18.6.3 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of restricted hazardous substances and safe for use in various markets.
