S-90357A147 3/8"-16 x 1/4" Alloy Steel Ultra-Low-Profile Socket Head Screws
Alloy Steel Ultra-Low-Profile 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 tensile strength of 140,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Precision Class 3A thread fit provides consistent engagement and vibration resistance, minimizing loosening in dynamic environments.
- Black-oxide coating on alloy steel offers enhanced corrosion resistance, extending service life in harsh industrial conditions.
- Ultra-low socket head profile allows for installation in tight spaces while maintaining high torque capability with a 3/16" hex drive.
- Rockwell C32 hardness ensures excellent wear resistance and durability under repeated use.
- Coarse UNC threads enable quick assembly and disassembly, improving efficiency in maintenance and production.
- Full threading along the 1/4" length provides uniform load distribution and secure fastening across the entire grip.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these socket head cap screws with 3/8"-16 UNC coarse threads and Class 3A fit address critical challenges in machinery assembly, automotive systems, and heavy equipment. The black-oxide alloy steel construction combats corrosion and wear, while the ultra-low profile head and hex drive design facilitate access in confined areas without compromising torque transmission. This combination ensures reliable fastening in high-vibration environments, reducing maintenance downtime and enhancing operational safety. Ideal for applications requiring precision screws with consistent performance under extreme loads.
Specification Summary & Compliance
This product adheres to UNC coarse thread standards with a Class 3A thread fit for precise dimensional accuracy, featuring a length tolerance of -0.005" to 0.005". Manufactured from alloy steel with a Rockwell C32 hardness and 140,000 psi tensile strength, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability in industrial use.
