S-90585A593 5/16"-18 x 2 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 from 316 stainless steel construction and passivated finish, ideal for harsh environments
- Exceptional tensile strength of 70,000 psi ensures reliable performance under heavy loads
- Precise Class 3A thread fit provides secure, vibration-resistant connections
- Fully threaded design offers maximum grip and holding power along the entire length
- Hex drive compatibility with 3/16" tools enables quick installation and removal
- Standard 82° countersink angle ensures flush mounting for clean, professional finishes
- Environmental compliance with RoHS and REACH standards for sustainable procurement
Professional Applications & Engineering Value
These 316 stainless steel flat head screws deliver critical performance advantages in demanding industrial applications where corrosion resistance and structural integrity are paramount. The combination of 70,000 psi tensile strength and Rockwell B55 hardness ensures reliable fastening in high-stress environments, from marine equipment to chemical processing facilities. The passivated finish significantly enhances the natural corrosion resistance of 316 stainless steel, providing extended service life in humid or chemically aggressive conditions. With UNC coarse threading and Class 3A thread fit, these fully threaded screws offer superior engagement and vibration resistance, while the hex drive design allows for high-torque installation in confined spaces. These flat head screws are engineered to maintain integrity in applications requiring both mechanical strength and environmental durability.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with precise Class 3A thread fit tolerances for consistent performance. Features 5/16"-18 UNC coarse threads with 82° countersink angle and 2 1/2" length. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring regulatory adherence for global industrial applications.
