S-92210A127 5-40 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
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance
- Precise Class 3A thread fit ensures secure fastening and vibration resistance in demanding applications
- Easy installation and removal with 5/64" hex drive and standard 82° countersink angle for flush mounting
- Full threading provides maximum grip length and uniform stress distribution along the entire shank
- Coarse UNC threading enables quick assembly and reduced cross-threading risk in industrial settings
- Regulatory compliance meets ASME B18.3 standards and environmental regulations including RoHS 3 and REACH
Professional Applications & Engineering Value
These 5-40 UNC flat head screws in 18-8 stainless steel deliver critical performance where corrosion resistance and structural integrity are paramount. The passivated finish significantly enhances surface durability against chemical exposure and oxidation, making them suitable for marine, chemical processing, and outdoor equipment applications. With Class 3A thread fit and coarse UNC threading, they provide superior vibration resistance and faster installation in production lines. The combination of 70,000 psi tensile strength and fully threaded design ensures consistent clamping force distribution, preventing joint failure in machinery, enclosures, and structural assemblies where reliability cannot be compromised.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and UNC coarse threading. Features include 5-40 thread size, 3/8" length, 0.281" head diameter, and 82° countersink angle. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
