S-94063A291 12-24 x 1/2" ASME B18.6.3 Tamper-Resistant Drilled Spanner Flat Head Screws
Tamper-Resistant Drilled Spanner 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 18-8 stainless steel construction, ideal for harsh industrial environments
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity and joint integrity
- Rockwell B70 hardness provides excellent wear resistance and durability under repeated use
- Undercut flat head profile with 82° countersink angle allows for flush mounting and reduced risk of snagging
- Drilled spanner drive (No. 12) enables secure tool engagement and prevents cam-out during installation
- Class 2A thread fit with coarse UNC threading ensures easy assembly and consistent fastening performance
- Full threading along the 1/2" length offers maximum grip and adjustment flexibility in various materials
Professional Applications & Engineering Value
These 12-24 UNC flat head screws are engineered to address critical industrial fastening challenges where reliability and corrosion resistance are paramount. The 18-8 stainless steel material provides exceptional durability in moist or chemically aggressive environments, preventing premature failure. The undercut flat head design with an 82° countersink angle ensures a smooth, flush finish, eliminating protrusions that could interfere with machinery operation or safety. Combined with the drilled spanner drive, these screws offer superior torque transmission, reducing installation time and minimizing tool slippage. Ideal for applications in automotive assembly, electrical enclosures, and precision equipment, these fully threaded coarse thread screws deliver consistent clamping force and vibration resistance, enhancing the longevity and performance of your assemblies.
Specification Summary & Compliance
This product adheres to Class 2A thread fit tolerance and UNC coarse thread standards, ensuring precise dimensional accuracy and compatibility. Manufacturing and quality are governed by ASME B18.6.3 specifications, guaranteeing consistent performance. The screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming they are free from hazardous substances and safe for use in regulated industries.
