S-90022A114 4-40 x 3/8" ASME B18.3 Steel Pan Head Torx Screws
Steel Pan Head Torx 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 harsh industrial environments
- Enhanced torque transmission through T10 Torx drive design, reducing cam-out risks and tool wear during installation
- Optimized load distribution with rounded pan head profile, minimizing surface damage while maintaining secure fastening
- Reliable thread engagement with fully threaded 4-40 UNC coarse threads and Class 2A fit, ensuring consistent clamping force
- Exceptional mechanical strength backed by Rockwell B70 hardness rating, providing durable performance under stress
- Streamlined compliance meeting ASME B18.3 standards alongside RoHS 3 and REACH environmental regulations
- Versatile 3/8" length with right-hand threading, offering broad compatibility across industrial assembly applications
Professional Applications & Engineering Value
These 4-40 UNC zinc-plated steel rounded head screws deliver critical performance advantages in precision assembly environments. The combination of T10 Torx drive and coarse threading addresses common installation challenges by providing superior torque transfer while resisting stripping. The zinc-plated finish creates a protective barrier against oxidation and chemical exposure, extending component lifespan in manufacturing equipment, electronic enclosures, and machinery. With fully threaded design and Class 2A thread fit, these screws maintain consistent clamping force across varied material thicknesses, preventing loosening from vibration. The rounded pan head profile distributes pressure evenly while allowing clearance in counterbored applications, making them ideal for automated production lines where reliability and compliance with ASME B18.3 standards are mandatory.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with 4-40 UNC coarse threads and right-hand threading. Complies with ASME B18.3 dimensional standards and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features Rockwell B70 hardness rating and fully threaded construction with 3/8" length for consistent mechanical performance.
