S-91247A114 5/16"-24 x 2" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 Steel Hex Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- High tensile strength of 120,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure
- Zinc plating finish provides excellent corrosion resistance, extending service life in harsh industrial environments
- Grade 5 classification guarantees consistent mechanical properties and load-bearing capacity for critical assemblies
- UNF fine threading offers superior vibration resistance and precise adjustment capabilities compared to coarse threads
- Class 2A thread fit ensures smooth installation while maintaining secure fastening integrity
- External hex drive design allows for high torque application with standard tools, improving installation efficiency
- Partial threading configuration provides optimal grip length while minimizing unnecessary thread engagement
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers exceptional engineering value for industrial applications where vibration resistance and structural integrity are paramount. The UNF fine thread configuration prevents loosening under dynamic loads, making it ideal for machinery, automotive assemblies, and equipment subjected to constant stress. The zinc plated steel construction combats environmental corrosion while maintaining the Rockwell C25 hardness required for repeated disassembly and reassembly cycles. With partial threading optimizing the grip-to-shank ratio, this fastener provides superior clamping force distribution in critical joints, solving common challenges of thread stripping and fatigue failure in heavy-duty applications.
Specification Summary & Compliance
Manufactured to precise inch system dimensions with Class 2A thread fit tolerance for consistent performance. Complies with ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. Meets environmental standards including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring safe use across regulated industries.
