S-90117A230 5/16"-24 x 3/4" ASME B18.3 Alloy Steel Wire-Lockable Socket Head Screws
Alloy Steel Wire-Lockable Socket 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 black-oxide finish, extending service life in harsh industrial environments.
- Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress applications without failure.
- Precise Class 3A thread fit delivers tighter tolerances for secure, vibration-resistant fastening in critical assemblies.
- Fine UNF thread design provides improved load distribution and reduced risk of loosening in dynamic conditions.
- Hex socket drive compatibility allows for easy installation with standard tools, minimizing assembly time and effort.
- Full compliance with ASME B18.3 standards guarantees consistent quality and interchangeability for engineering projects.
- RoHS 3 and REACH compliant for safe use in regulated industries, supporting environmental and safety standards.
Professional Applications & Engineering Value
This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address critical challenges in precision machinery, automotive, and aerospace sectors where vibration resistance and durability are paramount. The Class 3A thread fit and fine UNF threads ensure minimal backlash and superior clamping force, reducing maintenance needs in high-cycle applications. Its high tensile strength and Rockwell C37 hardness provide reliable performance under extreme loads, while the black-oxide coating enhances corrosion protection in humid or chemically aggressive environments. Ideal for assembly lines requiring repeatable torque accuracy and long-term reliability, this fastener supports efficient production workflows and reduces downtime.
Specification Summary & Compliance
This socket head cap screw adheres to ASME B18.3 specifications, with precise Class 3A thread fit and 5/16"-24 UNF fine threads in a right-hand direction. Manufactured from alloy steel in the inch system, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental safety and regulatory acceptance for industrial use.
