S-90585A059 3/8"-16 x 7/8" 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
- Exceptional 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 performance under heavy loads and vibration.
- Precise Class 3A thread fit for secure, tight fastening with minimal risk of loosening in critical assemblies.
- Full threading and coarse UNC thread provides faster installation and superior grip in a wide range of materials.
- 82° countersink angle and flat head design allows for a flush, clean finish, reducing snagging and improving safety.
- Hex drive (7/32") compatibility enables easy installation and removal with standard tools, boosting efficiency.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees quality, safety, and environmental responsibility for industrial use.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 316 stainless steel flat head screws address common challenges like corrosion, high stress, and assembly precision. The passivated finish enhances surface durability, preventing rust in marine, chemical, or outdoor applications. With a coarse UNC thread and Class 3A fit, they ensure quick, secure fastening in metals or plastics, reducing installation time and maintenance. The flat head with 82° countersink offers a smooth profile, minimizing protrusion in machinery or structural components. Ideal for heavy-duty assemblies, these screws support long-term reliability in construction, automotive, and equipment manufacturing, where ASME B18.3 compliance and environmental standards are critical.
Specification Summary & Compliance
This screw maintains precise dimensions, including a thread fit of Class 3A per UNC standards, ensuring tight tolerances for reliable performance. It adheres to ASME B18.3 manufacturing specifications, with a tensile strength of 70,000 psi and hardness of Rockwell B55. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), it meets environmental and safety regulations for industrial use.
