S-91236A819 5/8"-11 x 6 1/2" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws
Low-Strength 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
- Superior corrosion resistance with zinc plating for extended service life in harsh 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 deformation
- Coarse UNC threads with Class 2A fit enable faster assembly and better tolerance to debris
- External hex drive design allows for high-torque installation with standard tools
- Partially threaded shank provides optimal grip length while reducing weight and material usage
- Full compliance with ASME B18.2.1 standards guarantees dimensional accuracy and interchangeability
Professional Applications & Engineering Value
This 5/8"-11 UNC hex head screw delivers exceptional engineering value for demanding industrial applications where reliability is critical. The steel construction with zinc plating provides robust protection against corrosion, making it ideal for outdoor equipment, structural assemblies, and machinery subjected to environmental exposure. The coarse thread design ensures rapid installation and superior performance in applications where vibration resistance is essential. With its partial threading and external hex drive, this fastener offers optimal clamping force distribution while accommodating standard installation tools, reducing assembly time and maintenance requirements in construction, manufacturing, and heavy equipment applications.
Specification Summary & Compliance
Manufactured to precise ASME B18.2.1 specifications with Class 2A thread fit tolerances ensuring consistent performance and interchangeability. The UNC coarse thread pattern (5/8"-11) provides reliable fastening in various materials. Compliant with ASTM A307 material standards, featuring Rockwell B69 hardness and 60,000 psi tensile strength. Meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring safe use across global markets.
