S-91271A805 5/8"-11 x 2 3/4" IFI 115 12-Point Screws
12-Point 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 strength for demanding applications with 170,000 PSI tensile strength and Rockwell C37 hardness, providing superior resistance to shear and tensile forces.
- Precise and reliable thread engagement due to the Class 3A thread fit, ensuring tight, secure fastening in critical assemblies.
- High-torque installation capability from the external 12-point drive and 5/8" drive size, allowing for efficient assembly with standard tools.
- Enhanced load distribution and stability from the integrated flange, reducing the risk of surface damage and loosening under vibration.
- Optimized for coarse-thread applications with the 5/8"-11 UNC thread, offering quicker installation and better performance in softer materials or where debris is present.
- Long-lasting durability in harsh environments thanks to the high-strength alloy steel construction, resisting wear and corrosion.
- Guaranteed material safety and compliance by meeting IFI 115 specifications and being RoHS 3 and REACH compliant for use in regulated industries.
Professional Applications & Engineering Value
This 12-point alloy steel screw is engineered to solve critical fastening challenges in heavy machinery, construction, and automotive sectors. The 5/8"-11 UNC coarse thread and Class 3A thread fit provide a precise, vibration-resistant connection that maintains integrity under dynamic loads. The partially threaded, flanged design enhances clamping force and distributes stress evenly, preventing joint failure. Made from high-strength alloy steel with a Rockwell C37 hardness, it withstands extreme pressures and repetitive stress, making it ideal for structural applications, engine components, and industrial equipment where reliability is non-negotiable. Its external 12-point drive ensures easy installation in confined spaces, boosting assembly efficiency.
Specification Summary & Compliance
This screw adheres to strict dimensional and performance standards, including a Class 3A thread fit for high precision and UNC coarse threading with a 5/8"-11 size. It meets IFI 115 manufacturing specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring safe, environmentally responsible use in global industrial markets.
