S-91283A444 1 1/2"-6 x 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
- High tensile strength of 100,000 psi ensures reliable performance in demanding industrial applications, reducing the risk of fastener failure.
- Grade 5 steel construction with Rockwell C19 hardness provides excellent durability and resistance to wear, extending service life.
- Coarse UNC threading with Class 2A fit allows for quick assembly and secure fastening, minimizing installation time and improving efficiency.
- Fully threaded 4" length offers consistent grip and holding power along the entire shank, ideal for thick materials and heavy-duty connections.
- External hex drive design enables easy installation and removal with standard tools, enhancing maintenance accessibility.
- Compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent quality and interoperability, ensuring compatibility with existing systems.
- RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence, supporting sustainable procurement practices.
Professional Applications & Engineering Value
This Grade 5 steel hex head screw is engineered to address critical challenges in heavy machinery, construction, and structural assemblies where high tensile strength and reliability are paramount. The coarse UNC thread with Class 2A fit reduces cross-threading risks and ensures secure fastening in high-vibration environments, while the fully threaded design provides uniform load distribution. Made from robust steel and meeting ASME B18.2.1 specifications, it delivers consistent performance in applications like industrial equipment, automotive frames, and infrastructure projects, minimizing downtime and maintenance costs.
Specification Summary & Compliance
This fastener adheres to precise dimensional standards, including Class 2A thread fit for reliable engagement and UNC coarse threading with a size of 1 1/2"-6. It conforms to ASME B18.2.1 and SAE J429 manufacturing specifications, ensuring quality and consistency. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental and safety standards in industrial use.
