S-90128A373 3/8"-24 x 1 3/4" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel 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
- Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc plating protects against rust and extends service life in harsh industrial environments.
- Precise Class 3A thread fit provides tight, secure fastening with minimal backlash, ideal for vibration-prone applications.
- Fine UNF thread design offers improved load distribution and superior holding power compared to coarse threads.
- Partially threaded shank allows for controlled clamping force and prevents thread damage during installation.
- Hex socket drive enables high-torque installation with standard tools, reducing stripping and improving assembly efficiency.
- Compliance with ASTM A574 guarantees consistent quality and mechanical properties for engineering-critical applications.
Professional Applications & Engineering Value
These 3/8"-24 UNF socket head cap screws deliver critical performance in demanding industrial settings where vibration resistance and structural integrity are paramount. The zinc-plated alloy steel construction provides excellent corrosion protection for machinery, automotive assemblies, and heavy equipment exposed to moisture or chemicals. With their fine thread configuration and Class 3A thread fit, these fasteners maintain clamping force in high-vibration environments where loosening could cause equipment failure. The partially threaded design concentrates stress away from the threaded portion, preventing fatigue cracks in critical joints. These screws are engineered for precision applications requiring reliable, repeatable fastening in manufacturing fixtures, robotics, and aerospace components where 170,000 psi tensile strength ensures long-term joint security.
Specification Summary & Compliance
This socket head cap screw features precision Class 3A thread fit with 3/8"-24 UNF fine threads and 1 3/4" length. Manufactured to ASTM A574 specifications with Rockwell C37 hardness and 170,000 psi tensile strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.
