S-91309A913 1"-8 x 2 1/4" ASME B18.2.1, SAE J429 Low-Strength Steel Hex Head Screws
Low-Strength 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
- Superior corrosion resistance with zinc plating, extending service life in demanding industrial environments
- High tensile strength of 60,000 PSI ensures reliable performance under heavy loads and vibration
- Rockwell B69 hardness provides excellent durability and resistance to wear and deformation
- Coarse UNC threads with Class 2A fit enable faster assembly and better performance in softer materials
- External hex drive design allows for high-torque installation with standard tools, reducing assembly time
- Full threading along the 2 1/4" length offers maximum grip and adjustment flexibility in various applications
- Compliance with ASME B18.2.1 standards guarantees dimensional accuracy and interchangeability
Professional Applications & Engineering Value
This 1"-8 UNC coarse thread hex head screw delivers exceptional engineering value in heavy-duty applications where reliability is paramount. The combination of high-strength steel construction and zinc plating addresses common industrial challenges including corrosion-induced failure and material degradation. The coarse thread profile with Class 2A fit ensures secure fastening in structural components, machinery assemblies, and equipment frames, while the external hex drive facilitates efficient installation and maintenance operations. Engineered to withstand significant mechanical stress, this fastener provides long-term performance in construction, manufacturing, and industrial maintenance applications where vibration resistance and load-bearing capacity are critical requirements.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit with 1"-8 UNC coarse thread specifications, manufactured according to ASME B18.2.1 standards for dimensional accuracy. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors while maintaining the specified 60,000 PSI tensile strength and Rockwell B69 hardness parameters.
