S-92865A006 1/4"-28 x 3/4" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 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 with 120,000 psi rating ensures reliable performance in high-stress industrial applications
- Superior corrosion resistance through zinc plating protects against environmental degradation in demanding conditions
- Precision fine threading with UNF 1/4"-28 and Class 2A fit provides secure, vibration-resistant fastening
- Heavy-duty Grade 5 classification guarantees consistent mechanical properties and load-bearing capacity
- Optimized hex head design with external drive allows for easy installation and high torque application
- Full threading along 3/4" length enables maximum engagement and uniform stress distribution
- Rockwell C25 hardness maintains structural integrity under repeated loading and impact
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers critical engineering advantages for industrial assembly where vibration resistance and structural integrity are paramount. The zinc plated steel construction provides essential corrosion protection in manufacturing environments, while the UNF fine threading maintains secure connections in machinery subjected to dynamic loads. The combination of 120,000 psi tensile strength and Rockwell C25 hardness ensures these heavy-duty fasteners withstand extreme mechanical stress without deformation. The external hex drive facilitates efficient installation in confined spaces, making these industrial screws ideal for automotive, construction, and equipment manufacturing applications requiring dependable, long-term fastening solutions.
Specification Summary & Compliance
Manufactured to exacting Class 2A thread fit tolerances with 1/4"-28 UNF fine threads and right-hand threading. Fully compliant with ASME B18.2.1 specifications where identified as SAE J429. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards current as of January 17, 2023. The 3/4" length and fully threaded design ensure consistent performance across industrial applications.
