S-92210A079 2-56 x 3/8" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws
Stainless Steel 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 with 18-8 stainless steel construction and passivated finish, ideal for harsh environments
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity in demanding applications
- Precise Class 3A thread fit guarantees secure, vibration-resistant assemblies with minimal risk of loosening
- Hex drive design (0.050") provides efficient torque transmission and reduces tool slippage during installation
- 82° countersink angle with standard flat head profile enables flush mounting for clean, aerodynamic surfaces
- Fully threaded UNC coarse spacing delivers rapid installation and strong holding power in various materials
- Compliance with ASME B18.3, RoHS 3, and REACH ensures quality, safety, and environmental standards are met
Professional Applications & Engineering Value
These 2-56 UNC flat head screws are engineered to address critical challenges in precision assembly and corrosive environments. The 18-8 stainless steel material, combined with a passivated finish, provides exceptional resistance to oxidation and chemical exposure, making them ideal for electronics, aerospace, and marine equipment. The hex drive design prevents cam-out, ensuring consistent torque application in confined spaces, while the Class 3A thread fit and coarse thread spacing enhance grip strength and reduce cross-threading risks. With a Rockwell B55 hardness and fully threaded body, they maintain integrity under vibration and thermal cycling, offering long-term reliability for industrial fastening solutions.
Specification Summary & Compliance
This product adheres to ASME B18.3 specifications, with precise dimensional controls including a Class 3A thread fit, UNC thread type, and 82° countersink angle. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global regulatory requirements. The screw features a right-hand thread direction, 3/8" length, and is fully threaded for consistent performance across applications.
