S-93791A425 3/8"-16 x 1 1/2" 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 and black-oxide passivated finish for long-lasting performance in harsh environments.
- Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, heavy-duty fastening.
- Precise and secure thread engagement with Class 3A thread fit and UNC coarse threading, ensuring vibration resistance and easy installation.
- Optimized for flush mounting featuring a standard flat head with 82° countersink angle, ideal for applications requiring a smooth surface finish.
- Efficient installation and removal using a 7/32" hex drive, providing high torque transfer and reducing tool slippage.
- Full threading along the 1 1/2" length for maximum grip and adjustability in various material thicknesses.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety, quality, and environmental responsibility.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 3/8"-16 UNC flat head screws address critical challenges such as corrosion, high stress, and assembly efficiency. The 18-8 Stainless Steel material, combined with a black-oxide passivated finish, provides excellent resistance to rust and chemical exposure, making them ideal for outdoor machinery, marine equipment, and chemical processing plants. The Class 3A thread fit and coarse threading enhance load distribution and prevent loosening under vibration, while the fully threaded design ensures consistent clamping force in wood, metal, and composite applications. This screw is a reliable choice for engineers seeking durable, ASME B18.3 compliant fasteners that reduce maintenance and downtime.
Specification Summary & Compliance
This product adheres to precise dimensional standards, including Class 3A thread fit and UNC coarse threading for superior accuracy. It meets ASME B18.3 specifications for flat head screws, ensuring consistent quality and performance. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its environmental safety and suitability for global industrial use.
