S-91247A499 1"-14 x 7" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 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
- Exceptional load-bearing capacity with 120,000 psi tensile strength, ideal for high-stress industrial assemblies
- Superior corrosion resistance through zinc plating, extending service life in demanding environments
- Precise thread engagement with Class 2A fit and extra fine 1"-14 UNS threading for vibration-resistant connections
- Optimized torque transmission via external hex drive and 1 1/2" head width for secure installation
- Controlled fastening depth with 2 1/2" minimum threaded portion on 7" length for structural stability
- Certified material integrity meeting Grade 5 standards with Rockwell C25 hardness for consistent performance
- Regulatory compliance assurance with RoHS 3 and REACH environmental standards
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, this Grade 5 hex head screw addresses critical challenges in machinery assembly, structural steel connections, and equipment manufacturing. The zinc plated steel construction provides essential corrosion protection in humid or chemically aggressive environments, while the extra fine 1"-14 thread delivers superior resistance to vibrational loosening in dynamic load conditions. The partially threaded design ensures optimal clamp force distribution across joint interfaces, preventing material deformation in precision assemblies. With external hex drive compatibility and standardized dimensions per ASME B18.2.1, these screws integrate seamlessly into existing maintenance protocols and automated installation systems.
Specification Summary & Compliance
Manufactured to ASME B18.2.1 and SAE J429 Grade 5 specifications with Class 2A thread fit tolerance. Features 1"-14 extra fine UNS threads with right-hand orientation and 2 1/2" minimum thread length on a 7" overall fastener. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial supply chains.
