S-91236A644 3/8"-16 x 5" ASME B18.2.1, ASTM A307 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
- Exceptional tensile strength of 60,000 psi ensures reliable performance in demanding industrial applications
- Zinc plating provides superior corrosion resistance, extending service life in harsh environments
- Coarse UNC threads with Class 2A fit enable faster installation and secure fastening in various materials
- External hex drive design offers excellent torque transmission and easy installation with standard tools
- Partial threading configuration provides optimal grip strength while reducing material usage
- Compliance with ASME B18.2.1 and ASTM A307 standards guarantees consistent quality and dimensional accuracy
- Rockwell B69 hardness rating ensures durability and resistance to deformation under load
Professional Applications & Engineering Value
This 3/8"-16 UNC hex head screw delivers exceptional engineering value for heavy-duty industrial applications requiring reliable fastening solutions. The steel construction with zinc plating addresses critical corrosion concerns in manufacturing, construction, and machinery assembly environments. The coarse thread design provides superior holding power in softer materials while the external hex drive ensures maximum torque application without stripping. With partial threading, this fastener optimizes clamping force distribution, making it ideal for structural connections where vibration resistance and long-term reliability are paramount. The combination of 60,000 psi tensile strength and Rockwell B69 hardness ensures these hex head screws maintain integrity under sustained mechanical stress.
Specification Summary & Compliance
This 5" length hex head screw features 3/8"-16 UNC coarse threads with Class 2A thread fit tolerance for precise engagement. Manufactured to ASME B18.2.1 specifications and ASTM A307 material standards, ensuring dimensional consistency and mechanical properties. The product is fully RoHS 3 (2015/863/EU) compliant and meets REACH (EC 1907/2006) requirements, confirming environmental regulatory adherence for industrial use.
