S-90279A249 10-24 x 1 1/4" ASME B18.6.3 Steel Round Head Phillips Screws
Steel Round 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 environments
- High tensile strength of 60,000 psi ensures reliable performance under heavy loads and vibration
- Rockwell B69 hardness provides excellent durability and resistance to wear during installation and use
- Class 2A thread fit offers optimal assembly clearance while maintaining secure fastening integrity
- Coarse UNC threading enables quick installation and superior grip in various materials
- Phillips No. 2 drive delivers efficient torque transfer and reduces cam-out during installation
- Fully threaded design maximizes engagement length for stronger, more uniform clamping force distribution
Professional Applications & Engineering Value
These 10-24 UNC zinc-plated steel rounded head screws are engineered to address critical industrial fastening challenges where corrosion resistance and structural integrity are paramount. The combination of 60,000 psi tensile strength and Rockwell B69 hardness ensures these fasteners withstand extreme mechanical stresses in heavy machinery, electrical enclosures, and structural assemblies. The coarse thread configuration provides excellent holding power in both metallic and non-metallic substrates, while the zinc plating creates a protective barrier against moisture, chemicals, and environmental degradation. The rounded head profile with Phillips drive facilitates smooth installation and creates a finished appearance ideal for applications where both performance and aesthetics matter.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerance for precise dimensional accuracy. These fully threaded screws feature 10-24 UNC coarse threads with right-hand orientation and standard rounded head profile. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
