S-90357A015 1/4"-20 x 3/4" 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
- Exceptional tensile strength of 140,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
- Black-oxide coating on alloy steel provides enhanced corrosion resistance and a durable, non-reflective finish for extended service life.
- Class 3A UNC thread fit offers superior precision and tighter tolerances for secure, vibration-resistant assemblies in machinery and equipment.
- Ultra-low socket head profile allows for installation in confined spaces where standard head height is prohibitive.
- Hex drive design enables high torque application and easy installation with standard tools, minimizing assembly time.
- Full compliance with RoHS 3 and REACH standards ensures environmental safety and meets global regulatory requirements for industrial use.
- Rockwell C32 hardness provides excellent wear resistance, maintaining thread integrity through repeated use.
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in industrial settings where space constraints and high stress are common. The ultra-low profile head and Class 3A UNC coarse threads provide a compact yet robust fastening solution for machinery, automotive assemblies, and precision equipment. The alloy steel construction combined with a black-oxide surface treatment resists corrosion and wear, extending maintenance intervals in harsh environments. Its 140,000 psi tensile strength ensures dependable performance under heavy loads, making it ideal for applications requiring reliable, high-strength industrial fasteners that comply with stringent industry standards.
Specification Summary & Compliance
This socket head cap screw features a 1/4"-20 UNC thread with Class 3A fit for precise engagement and a length of 3/4" with a tolerance of -0.005" to 0.005". Manufactured from alloy steel with a Rockwell C32 hardness, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring adherence to environmental and safety regulations for industrial components.
