S-91309A808 5/8"-11 x 3 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 demanding industrial environments
- High tensile strength of 60,000 psi ensures reliable performance in heavy-duty applications
- Precise Class 2A thread fit enables smooth installation and secure fastening connections
- External hex drive design provides excellent torque transmission and easy installation with standard tools
- Rockwell B69 hardness rating delivers exceptional durability and resistance to wear
- Fully threaded construction allows for maximum grip length and versatile positioning
- Industry standard compliance guarantees consistent quality and interchangeability
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 5/8"-11 UNC hex head screws combine high-strength steel construction with zinc plating to address critical challenges in structural assembly and machinery maintenance. The coarse thread design facilitates quick installation in various materials while resisting vibration-induced loosening. With external hex drive compatibility, these fasteners enable efficient torque application using standard tools, reducing assembly time in construction, manufacturing, and heavy equipment applications. The fully threaded configuration ensures maximum engagement strength, making them ideal for structural connections, machinery frames, and industrial equipment where 60,000 psi tensile strength and reliable performance are essential for operational safety and longevity.
Specification Summary & Compliance
These hex head screws feature 5/8"-11 UNC coarse threads with Class 2A thread fit for precise dimensional accuracy and reliable performance. Manufactured from steel with zinc plating finish, they comply with ASME B18.2.1 and ASTM A307 specifications, ensuring consistent quality and mechanical properties. The fasteners are RoHS 3 (2015/863/EU) compliant, meeting environmental regulations for industrial use while maintaining 60,000 psi tensile strength and Rockwell B69 hardness for dependable service in various applications.
