S-97595A251 1/4"-20 x 1/2" ASME B18.3 Brass Hex Drive Flat Head Screws
Brass Hex Drive 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 from high-quality brass construction, ensuring long-term reliability in demanding environments
- Exceptional 50,000 psi tensile strength provides reliable fastening performance under substantial mechanical stress
- Precision Class 3A thread fit delivers superior engagement and vibration resistance in critical applications
- Optimized 82° countersink angle enables flush mounting with standard countersunk holes for clean, professional finishes
- Hex drive compatibility allows for high-torque installation and removal with standard tools
- Full threading design ensures maximum grip length and uniform load distribution
- Rockwell B55 hardness maintains thread integrity and prevents stripping during repeated use
Professional Applications & Engineering Value
Engineered for precision industrial applications, these brass flat head screws with UNC coarse threading provide exceptional performance in electrical components, marine equipment, and plumbing systems where corrosion resistance is critical. The Class 3A thread fit ensures minimal backlash and superior vibration resistance in high-cycle applications, while the hex drive design enables secure installation in confined spaces. The combination of 50,000 psi tensile strength and Rockwell B55 hardness addresses common failure points in industrial fastening, offering reliable performance in machinery, instrumentation, and assembly operations where material compatibility and regulatory compliance are essential.
Specification Summary & Compliance
Manufactured to ASME B18.3 standards with precise Class 3A thread fit and UNC coarse threading (1/4"-20). Features include 82° countersink angle, fully threaded design, and right-hand thread orientation. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors while maintaining dimensional accuracy and performance specifications.
