S-90272A552 1/4"-20 x 2 1/2" 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 plating, extending service life in harsh industrial environments
- High tensile strength of 60,000 PSI ensures reliable load-bearing capacity for demanding applications
- Rockwell B70 hardness provides excellent durability and resistance to wear during installation and use
- Class 2A thread fit with UNC coarse threading allows for quick assembly and vibration resistance
- No. 3 Phillips drive design offers secure tool engagement and efficient installation
- Fully threaded 2-1/2" length delivers maximum grip strength across the entire fastener
- Compliance with ASME B18.6.3 standards guarantees consistent quality and dimensional accuracy
Professional Applications & Engineering Value
This zinc-plated steel pan head screw with 1/4"-20 UNC coarse threads addresses critical industrial fastening challenges where corrosion resistance and structural integrity are paramount. The combination of 60,000 PSI tensile strength and Rockwell B70 hardness ensures reliable performance in heavy machinery, construction equipment, and automotive assemblies where vibration and dynamic loads are common. The fully threaded design provides uniform stress distribution, while the pan head profile with Phillips drive offers low-profile installation without compromising torque transmission. Ideal for manufacturing facilities, metal fabrication, and maintenance operations requiring ASME B18.6.3 compliant fasteners that withstand environmental exposure while maintaining clamping force.
Specification Summary & Compliance
Manufactured to Class 2A thread fit tolerances with UNC coarse threading (1/4"-20) and right-hand thread direction. Fully compliant with ASME B18.6.3 manufacturing specifications, RoHS 3 (2015/863/EU) environmental directives, and REACH (EC 1907/2006) chemical safety regulations. Standard pan head style with 0.492" head diameter and 2-1/2" fully threaded length ensures dimensional consistency across production batches.
