S-90272A324 4-40 x 1 3/8" 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
- Exceptional tensile strength rated at 60,000 psi ensures reliable performance under heavy loads
- Optimized drive engagement with No. 1 Phillips drive for secure installation and reduced cam-out risk
- Precision thread fit with Class 2A UNC coarse threads for faster assembly and vibration resistance
- Enhanced durability with Rockwell B70 hardness maintaining structural integrity through repeated use
- Full threading along the 1-3/8" length provides maximum grip and uniform clamping force
- Industry compliance meeting ASME B18.6.3 specifications for consistent quality and interchangeability
Professional Applications & Engineering Value
These 4-40 UNC rounded pan head Phillips screws deliver critical performance advantages for industrial assembly applications. The zinc-plated steel construction provides essential corrosion protection in manufacturing environments, while the coarse thread design enables rapid installation in various materials without compromising holding power. The combination of 60,000 psi tensile strength and Rockwell B70 hardness ensures these fasteners withstand dynamic loads and vibration in machinery, electronics, and equipment assembly. The rounded pan head profile offers a low-profile finish that minimizes snagging while the No. 1 Phillips drive facilitates efficient installation with standard tools, reducing assembly time and labor costs in high-volume production settings.
Specification Summary & Compliance
This 1-3/8" fully threaded screw features precision UNC coarse threads with Class 2A thread fit per ASME B18.6.3 standards, ensuring dimensional accuracy and reliable performance. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict material restrictions. Manufacturing specifications include 0.112" thread diameter and right-hand thread direction for standardized installation across compatible components and assemblies.
