S-90272A542 1/4"-20 x 1" 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, extending service life in demanding industrial environments
- High tensile strength of 60,000 psi ensures reliable fastening under heavy loads and vibration
- Rockwell B70 hardness provides excellent wear resistance and prevents thread deformation during installation
- Fully threaded design offers maximum grip length and uniform stress distribution across the entire fastener
- Class 2A thread fit with UNC coarse threading enables quick assembly and reduces cross-threading risks
- No. 3 Phillips drive delivers secure tool engagement and efficient installation with standard drivers
- Pan head profile combines low-profile design with adequate bearing surface for stable clamping force
Professional Applications & Engineering Value
These zinc-plated steel rounded head screws with 1/4"-20 UNC coarse threads are engineered to address critical industrial fastening challenges. The combination of 60,000 psi tensile strength and Rockwell B70 hardness ensures reliable performance in heavy machinery, electrical enclosures, and structural assemblies where vibration resistance and long-term durability are paramount. The fully threaded design provides consistent clamping force across the entire length, while the zinc plating offers essential corrosion protection in manufacturing facilities, outdoor equipment, and marine applications. The pan head profile with Phillips drive facilitates quick installation in confined spaces, making these industrial screws ideal for production lines requiring efficient assembly operations.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (1/4"-20) and right-hand thread direction. These screws conform to ASME B18.6.3 manufacturing specifications and demonstrate compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The inch system measurements ensure dimensional accuracy with 1" length, 0.492" head diameter, and No. 3 Phillips drive size for consistent performance across industrial applications.
