S-90585A974 3/4"-10 x 3 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 in harsh environments thanks to 316 stainless steel construction and passivated finish.
- High mechanical strength and durability for demanding applications, with a 70,000 psi tensile strength and Rockwell B55 hardness.
- Reliable, precision threading ensures secure fastening with a Class 3A thread fit and UNC coarse thread spacing for easy engagement.
- Optimal flush mounting is achieved with the standard flat head profile and 82° countersink angle.
- Efficient installation and removal provided by the 1/2" hex drive, accommodating high-torque applications.
- Full-length threading offers maximum grip and adjustability along the entire 3 1/2" length.
- Compliance with major industry standards including ASME B18.3, ensuring dimensional consistency and performance reliability.
Professional Applications & Engineering Value
This 3/4"-10 UNC flat head screw is engineered from 316 stainless steel to solve critical challenges in corrosive and high-strength environments, such as marine, chemical processing, and outdoor infrastructure. The passivated finish significantly enhances its resistance to oxidation and chemical attack, prolonging service life. Its Class 3A thread fit and UNC coarse thread provide a precise, robust connection that resists vibration loosening, essential for machinery and structural assemblies. The 82° countersink angle and flat head design allow for a smooth, flush surface finish, preventing snagging and improving safety. Combined with a 1/2" hex drive for high-torque installation, this screw delivers reliable performance where industrial screw integrity is non-negotiable.
Specification Summary & Compliance
This product adheres to strict dimensional and performance criteria, including a Class 3A thread fit per UNC standards, ensuring precise thread engagement. Manufacturing and material specifications meet ASME B18.3. The screw is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and suitable for global industrial supply chains.
