S-91247A484 3/4"-16 x 4 1/2" 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
- Exceptional tensile strength of 120,000 PSI ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance with zinc plating extends service life in harsh industrial environments, minimizing maintenance needs.
- Precision UNF fine threading provides superior vibration resistance and secure fastening compared to coarse threads.
- Grade 5 steel construction with Rockwell C25 hardness offers excellent durability and wear resistance for long-term use.
- Optimized partial threading allows for focused thread engagement where needed, improving installation efficiency.
- Class 2A thread fit ensures consistent, reliable assembly with standard nuts and threaded components.
- External hex drive design enables high-torque installation with common tools, speeding up assembly processes.
Professional Applications & Engineering Value
This 3/4"-16 UNF hex head screw delivers critical engineering value in heavy-duty industrial applications where vibration resistance and structural integrity are paramount. The Grade 5 steel composition, combined with zinc plating, addresses common corrosion and strength challenges in machinery, construction, and manufacturing equipment. The UNF fine thread spacing maintains clamping force under dynamic loads, while the partially threaded design concentrates engagement where maximum holding power is required. These hex head screws solve fastener loosening and material degradation issues, providing dependable performance in demanding environments from assembly lines to structural frameworks.
Specification Summary & Compliance
Manufactured to Class 2A thread fit tolerances with 3/4"-16 UNF fine spacing, this fastener meets ASME B18.2.1 and SAE J429 specifications for dimensional accuracy and mechanical properties. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) ensures environmental safety and regulatory adherence for global industrial use.
