S-97595A558 2-56 x 3/8" 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 material, ideal for harsh industrial environments
- Exceptional tensile strength rated at 50,000 PSI for reliable performance under heavy loads
- Precise Class 3A thread fit ensures secure fastening with minimal vibration loosening
- Optimized 82° countersink angle provides flush mounting and improved aesthetic finish
- Hex drive design (0.050") delivers maximum torque transfer and prevents tool slippage
- Rockwell B55 hardness maintains thread integrity through repeated installation cycles
- Full threading along 3/8" length enables complete engagement for superior holding power
Professional Applications & Engineering Value
These 2-56 UNC brass flat head screws deliver critical performance advantages in precision assembly applications where corrosion resistance and mechanical strength are paramount. The combination of Rockwell B55 hardness and 50,000 PSI tensile strength ensures reliable fastening in electronic enclosures, instrumentation panels, and marine equipment where environmental factors challenge fastener integrity. The standard 82° countersink angle and flat head profile create seamless surface finishes while the hex drive system provides positive engagement for high-torque installation. Engineered with coarse thread spacing and Class 3A thread fit, these screws maintain precise alignment in vibration-prone applications, reducing maintenance requirements and extending service life in demanding industrial environments.
Specification Summary & Compliance
Manufactured to exacting inch system dimensions with Class 3A thread fit tolerance for precision assembly. Complies with ASME B18.3 mechanical standards for dimensional consistency and performance. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for hazardous substance restriction. Features UNC coarse threads with right-hand thread direction and fully threaded design for maximum engagement strength across the entire 3/8" length.
