S-90283A552 1/4"-20 x 2 1/2" ASME B18.6.3 Steel Pan Head Slotted Screws
Steel Pan Head Slotted 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 for extended service life in demanding industrial environments
- High tensile strength of 60,000 psi ensures reliable performance under substantial mechanical loads
- Rockwell B60 hardness provides excellent durability and resistance to deformation during installation
- Class 2A thread fit offers optimal balance between easy assembly and secure fastening retention
- Fully threaded design maximizes engagement depth and provides consistent clamping force along entire length
- Slotted pan head configuration enables quick installation with standard tools while maintaining low profile
- UNC coarse threading facilitates rapid assembly and reduces cross-threading risks in production environments
Professional Applications & Engineering Value
This zinc-plated steel slotted pan head screw delivers exceptional engineering value across multiple industrial sectors. The combination of 60,000 psi tensile strength and Rockwell B60 hardness makes it ideal for heavy-duty applications where vibration resistance and structural integrity are critical. The UNC coarse thread design significantly reduces installation time in production lines while minimizing thread damage. The zinc plating provides essential corrosion protection for equipment exposed to industrial atmospheres, extending maintenance intervals. Particularly valuable in machinery assembly, electrical enclosures, and structural frameworks, this fully threaded fastener ensures uniform stress distribution and reliable long-term performance in demanding operating conditions.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerance for precise engagement. Features 1/4"-20 UNC coarse threads in right-hand direction with standard pan head profile (0.492" diameter, 0.144" height). Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
