S-91271A803 5/8"-11 x 2 1/4" 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 load-bearing capacity with 170,000 psi tensile strength for reliable performance in high-stress applications
- Superior thread precision with Class 3A fit ensuring tight, secure connections and vibration resistance
- Enhanced durability from Rockwell C37 hardness alloy steel providing excellent wear and corrosion resistance
- Optimized installation efficiency with external 12-point drive and 5/8" drive size for high-torque applications
- Increased stability through integrated flange design distributing load evenly and preventing surface damage
- Reliable coarse threading with 5/8"-11 UNC pattern offering quick assembly and superior holding power
- Full regulatory compliance meeting IFI 115 standards, RoHS 3, and REACH for global industrial use
Professional Applications & Engineering Value
This high-strength alloy steel 12-point screw addresses critical engineering challenges in heavy machinery, structural assemblies, and industrial equipment where vibration resistance and load distribution are paramount. The Class 3A thread fit combined with coarse UNC threading ensures rapid installation while maintaining precise tolerances under dynamic loads. The external 12-point drive system allows for high-torque application in confined spaces, making it ideal for construction equipment, automotive assemblies, and industrial machinery. The flanged design eliminates the need for separate washers, reducing assembly time while providing superior clamping force. Manufactured from alloy steel with Rockwell C37 hardness, these screws maintain integrity in demanding environments where fatigue resistance and long-term reliability are essential.
Specification Summary & Compliance
This precision 12-point screw features 5/8"-11 UNC coarse threads with Class 3A fit for exceptional dimensional accuracy. The fully threaded design and 2-1/4" length provide consistent engagement throughout the fastener. Manufacturing complies with IFI 115 specifications for quality assurance, while meeting RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The right-hand thread direction and external 12-point drive ensure compatibility with standard industrial tools and applications requiring high-torque fastening solutions.
