S-90273A239 10-24 x 5/16" ASME B18.6.3 Steel Phillips Flat Head Screws
Steel Phillips Flat Head 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 for extended service life in demanding environments
- Exceptional 60,000 psi tensile strength ensures reliable, vibration-resistant fastening in high-stress applications
- Precision Class 2A thread fit provides smooth installation and consistent clamping force
- 82° undercut flat head design allows for flush mounting and improved aesthetic finish
- Full threading along 5/16" length maximizes grip range and load distribution
- Rockwell B70 hardness rating maintains thread integrity during repeated installations
- Phillips No. 2 drive compatibility offers widespread tool accessibility and efficient installation
Professional Applications & Engineering Value
These 10-24 UNC flat head screws deliver critical engineering advantages where flush surface mounting and structural integrity are paramount. The zinc-plated steel construction provides essential corrosion protection for industrial equipment, machinery assemblies, and electronic enclosures exposed to moderate environmental conditions. The coarse UNC thread profile ensures rapid installation and superior resistance to vibration loosening compared to fine-thread alternatives. The undercut flat head design with 82° countersink angle enables precise seating in machined surfaces, eliminating protrusions that could interfere with moving components or compromise safety. These fully threaded screws distribute clamping force evenly across the entire 5/16" length, making them ideal for securing thin-gauge materials and composite assemblies where thread engagement is limited.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerances ensuring consistent performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features right-hand UNC coarse threads with 10-24 sizing in the inch system, Rockwell B70 hardness, and 82° countersink angle for standardized mounting applications.
