S-91236A677 7/16"-14 x 2" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws
Low-Strength Steel Hex 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 tensile strength rated at 60,000 psi for reliable performance in demanding applications, reducing the risk of fastener failure.
- Enhanced corrosion resistance from the zinc plating, extending service life in various environmental conditions.
- High hardness (Rockwell B69) provides excellent wear resistance and durability under mechanical stress.
- Coarse UNC threads ensure quick and easy installation, minimizing assembly time and labor costs.
- External hex drive and hex head design allows for high torque application with standard tools, ensuring secure fastening.
- Class 2A thread fit offers consistent, reliable engagement with nuts and tapped holes, preventing cross-threading.
- Partial threading provides unthreaded shank for shear strength, ideal for applications requiring precise clamp load.
Professional Applications & Engineering Value
This 7/16"-14 UNC hex head screw is engineered to address common industrial fastening challenges, such as vibration loosening and corrosion-induced failure. Made from steel with a zinc plated finish, it offers robust protection against rust, making it suitable for outdoor machinery, construction frameworks, and heavy equipment assembly. The coarse thread design ensures quick installation even in rough or debris-prone environments, reducing downtime. With its external hex drive, it enables high-torque tightening for critical joints in structural and mechanical systems, providing long-term reliability and reducing maintenance needs in industrial applications.
Specification Summary & Compliance
This screw features precise Class 2A thread fit and adheres to UNC coarse thread standards with a size of 7/16"-14. It is manufactured in compliance with ASME B18.2.1 and ASTM A307 specifications, ensuring dimensional accuracy and performance consistency. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its safety and sustainability for global industrial use.
