S-90276A303 12-24 x 2 1/2" ASME B18.6.3 Steel Round Head Slotted Screws
Steel Round 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-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 B69 hardness provides excellent wear resistance and prevents thread deformation during installation
- Class 2A thread fit offers optimal assembly tolerance for smooth installation while maintaining secure connections
- Partially threaded design allows for precise clamping force control and prevents over-tightening
- Coarse UNC threading enables quick installation and superior performance in softer materials
- Slotted drive compatibility with standard tools simplifies maintenance and field service operations
Professional Applications & Engineering Value
Engineered for industrial fastening applications requiring dependable performance, these 12-24 UNC zinc-plated steel screws solve critical assembly challenges. The rounded head profile distributes clamping force evenly while the slotted drive style ensures compatibility with standard maintenance tools. The coarse thread spacing provides excellent grip in metal, wood, and composite materials, reducing installation time without compromising joint integrity. With partial threading and Class 2A thread fit, these fasteners prevent cross-threading and ensure consistent torque values across production runs. Ideal for machinery assembly, electrical enclosures, and structural frameworks where 60,000 psi tensile strength and corrosion protection are essential for long-term reliability.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerances for precision assembly. Features 12-24 UNC coarse threads with right-hand direction and standard rounded head profile. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. Thread diameter measures 0.216" with minimum thread length of 1-1/2" and overall length of 2-1/2".
