S-90357A143 5/16"-18 x 5/16" 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
- Exceptional tensile strength of 140,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
- Precision Class 3A thread fit provides superior engagement and vibration resistance in demanding applications.
- Black-oxide coating on alloy steel offers enhanced corrosion resistance and a durable, non-reflective finish.
- Ultra-low socket head profile allows for installation in tight spaces where clearance is limited.
- 5/32" hex drive design enables secure tool engagement and high torque application without stripping.
- Fully threaded right-hand coarse UNC thread ensures quick assembly and strong holding power.
- Compliance with RoHS 3 and REACH regulations guarantees environmental safety and suitability for global industrial markets.
Professional Applications & Engineering Value
These socket head cap screws are engineered with black-oxide alloy steel and Class 3A UNC coarse threads to address critical industrial challenges, such as vibration loosening and space constraints. The ultra-low profile head and 5/32" hex drive facilitate easy installation in compact machinery, automotive assemblies, and precision equipment, ensuring a secure fit without protruding components. With a tensile strength of 140,000 psi and Rockwell C32 hardness, they provide long-lasting durability in high-load environments, reducing maintenance needs and enhancing operational efficiency. Ideal for OEM and MRO applications, these screws deliver consistent performance where reliability is paramount.
Specification Summary & Compliance
This product adheres to inch system measurements with precise dimensions: thread size 5/16"-18 UNC, head diameter 0.438", and length tolerance of -0.005" to 0.005". The Class 3A thread fit ensures tight tolerances for superior performance, while compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards confirms environmental and safety adherence. Manufactured to meet industrial specifications for coarse thread screws, it guarantees reliability in various engineering applications.
