S-90272A112 4-40 x 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 industrial environments
- Exceptional holding power with 60,000 psi tensile strength ensuring reliable fastening in high-stress applications
- Optimized drive engagement through Phillips No. 1 drive design providing secure torque transmission and reduced cam-out risk
- Enhanced thread engagement with coarse UNC threading and Class 2A fit for faster installation and vibration resistance
- Consistent performance reliability backed by Rockwell B70 hardness maintaining structural integrity under repeated loads
- Versatile application compatibility with standard pan head profile accommodating various assembly requirements
- Full regulatory compliance meeting ASME B18.6.3 specifications and environmental standards for global industrial use
Professional Applications & Engineering Value
These 4-40 UNC zinc-plated steel rounded head screws deliver critical engineering advantages in industrial fastening systems. The combination of zinc-plated steel material and coarse thread spacing provides exceptional corrosion resistance while enabling rapid installation in production environments. The fully threaded design ensures maximum grip length and load distribution, making these Phillips drive screws ideal for machinery assembly, electrical enclosures, and equipment manufacturing where vibration resistance and consistent clamping force are essential. The rounded pan head profile offers optimal bearing surface while the Class 2A thread fit maintains precise tolerances for repeatable performance in automated assembly processes.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit tolerances ensuring dimensional accuracy and interchangeability. These 5/8" length screws feature UNC coarse threads with right-hand direction and comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The zinc-plated steel construction meets industrial specifications for corrosion protection while maintaining 60,000 psi tensile strength and Rockwell B70 hardness for demanding mechanical applications.
