S-90272A272 4-40 x 1 3/4" 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 harsh industrial environments
- High tensile strength of 60,000 psi ensures reliable fastening under demanding mechanical loads
- Class 2A thread fit provides consistent, precise engagement with mating components
- Rockwell B70 hardness maintains structural integrity and prevents thread deformation during installation
- Fully threaded design offers maximum grip length and uniform load distribution
- Phillips drive compatibility enables efficient installation with standard industrial tools
- Compliance with ASME B18.6.3 standards guarantees dimensional accuracy and interchangeability
Professional Applications & Engineering Value
These 4-40 UNC zinc-plated steel rounded head screws deliver exceptional performance in industrial assembly applications where corrosion resistance and mechanical reliability are critical. The coarse thread configuration provides superior holding power in softer materials and faster installation times, while the pan head profile offers optimal clearance and professional finish. Engineered with fully threaded construction and Class 2A thread fit, these Phillips drive screws eliminate cross-threading risks and ensure consistent clamping force in automotive, machinery, and electrical enclosure applications. The combination of 60,000 psi tensile strength and zinc-plated surface treatment creates a durable fastening solution that withstands vibration, environmental exposure, and repeated maintenance cycles.
Specification Summary & Compliance
Manufactured to precise ASME B18.6.3 specifications with Class 2A thread fit tolerance for guaranteed dimensional accuracy. These 1 3/4" length screws feature UNC coarse threads and comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial markets while maintaining consistent performance across production batches.
