S-91247A525 1"-14 x 3 1/4" 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 tensile strength with 120,000 psi rating ensures reliable performance in high-stress industrial applications
- Superior corrosion resistance through zinc plating protects against environmental degradation in demanding conditions
- Precision thread engineering with Class 2A fit and extra fine 1"-14 thread provides secure fastening and vibration resistance
- Optimized torque transmission through external hex drive design allows for efficient installation with standard tools
- Grade 5 certification guarantees consistent mechanical properties and Rockwell C25 hardness for durable performance
- Partial threading design offers both gripping strength and clearance flexibility in assembly applications
- Comprehensive compliance with ASME, SAE, RoHS 3, and REACH standards ensures quality and environmental responsibility
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these Grade 5 hex head screws deliver exceptional value in applications requiring precise extra fine threading and reliable clamping force. The zinc plated steel construction provides critical corrosion protection while maintaining the 120,000 psi tensile strength needed for heavy machinery, structural assemblies, and equipment manufacturing. The 1"-14 UNS thread with Class 2A fit ensures superior vibration resistance and consistent torque performance, addressing common failure points in dynamic load conditions. The external hex drive facilitates efficient installation in confined spaces, making these partially threaded fasteners ideal for applications requiring both secure fastening and component alignment.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit with 1"-14 extra fine UNS thread and 3 1/4" length. Manufactured to ASME B18.2.1 and SAE J429 Grade 5 specifications, ensuring dimensional accuracy and mechanical consistency. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, providing assurance for international industrial applications requiring verified material safety and environmental responsibility.
