S-94173A304 1/4"-28 x 2" 12-Point Screws
12-Point Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
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Key Features & Benefits at a Glance
- Superior corrosion resistance from black-oxide coating, extending service life in harsh industrial environments
- Exceptional 170,000 PSI tensile strength provides reliable performance under high-stress applications
- Precision Class 2A thread fit ensures consistent engagement and reduces cross-threading risks
- External 12-point drive design offers superior torque transmission and tool clearance in confined spaces
- Integrated flange eliminates need for separate washers, simplifying assembly while distributing load effectively
- Rockwell C38 hardness rating maintains structural integrity under repeated loading conditions
- UNF fine threading delivers enhanced vibration resistance compared to coarse thread alternatives
Professional Applications & Engineering Value
This 12-point flange screw addresses critical engineering challenges in heavy machinery, automotive assemblies, and industrial equipment where vibration resistance and corrosion protection are paramount. The black-oxide alloy steel construction combined with UNF fine threading creates a durable fastening solution that maintains clamp force under dynamic loads. The partially threaded design allows precise positioning while the integrated flange provides stable bearing surface contact, preventing joint loosening in high-vibration environments. These characteristics make it ideal for precision assemblies requiring 170,000 PSI tensile strength and reliable performance in demanding applications.
Specification Summary & Compliance
Manufactured to exacting standards with Class 2A thread fit per UNF specifications, ensuring dimensional accuracy and interchangeability. The 1/4"-28 UNF fine thread configuration provides superior performance in precision applications. Compliant with industry standards including ASME/ANSI specifications for dimensional requirements. The black-oxide surface treatment meets industrial corrosion resistance standards while maintaining RoHS and REACH compliance for environmental safety.
