S-90585A535 1/4"-20 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 316 Stainless Steel and passivated finish, ideal for harsh environments and extended service life.
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity and resistance to mechanical stress in demanding applications.
- Precision Class 3A thread fit guarantees tight tolerances and secure fastening, reducing the risk of loosening under vibration.
- Fully threaded design provides consistent engagement along the entire length for uniform clamping force and stability.
- 82° countersink angle and flat head profile allow for flush mounting, minimizing protrusion and improving aesthetics in assembled products.
- Hex drive (5/32") enables easy installation and removal with standard tools, enhancing assembly efficiency.
- Compliance with ASME B18.3, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations for safe, global use.
Professional Applications & Engineering Value
Engineered for industrial and marine settings, these 1/4"-20 UNC flat head screws in 316 Stainless Steel address critical challenges like corrosion and mechanical failure. The passivated finish enhances surface durability, while the coarse UNC thread and Class 3A fit provide rapid assembly and vibration resistance in machinery, electronics, and structural frameworks. With a Rockwell B55 hardness and 70,000 psi tensile strength, they offer reliable performance in high-stress applications, ensuring long-term integrity and reducing maintenance costs. The 82° countersink angle facilitates seamless integration, making them ideal for applications requiring a smooth surface finish.
Specification Summary & Compliance
This screw features precise dimensions, including a 3/8" length, 1/4"-20 UNC coarse thread with Class 3A thread fit for high accuracy, and a head diameter tolerance of -0.051" to 0". Manufactured to ASME B18.3 specifications, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industry-standard reliability.
