S-92220A122 4-40 x 3/8" ASTM A574 Alloy Steel Low-Profile Socket Head Screws
Alloy Steel 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 high-stress applications, reducing the risk of fastener failure.
- Corrosion-resistant Black-Oxide finish on alloy steel enhances durability and longevity in harsh industrial environments.
- Low-profile socket head design allows for installation in tight spaces where clearance is limited, improving design flexibility.
- Precise Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening over time.
- High Rockwell C39 hardness offers excellent wear resistance, maintaining thread integrity through repeated use.
- Coarse UNC thread spacing enables quicker assembly and disassembly, boosting efficiency in production and maintenance.
- Full threading along the 3/8" length ensures consistent grip and load distribution, ideal for secure fastening in various materials.
Professional Applications & Engineering Value
These 4-40 UNC thread low profile socket head cap screws are engineered to address common challenges in precision industries, such as machinery, electronics, and automotive assemblies. The Black-Oxide alloy steel construction provides a robust barrier against corrosion and wear, extending service life in demanding conditions. With a low-profile head and hex drive design, they facilitate easy installation in confined spaces, reducing assembly time and improving accessibility. The coarse thread spacing and Class 3A fit ensure tight, reliable connections that resist vibration and shock, making them ideal for applications where stability is critical. This combination of material strength and precise engineering delivers consistent performance, minimizing downtime and maintenance costs for B2B clients.
Specification Summary & Compliance
This product adheres to inch system measurements with a thread size of 4-40 UNC and a Class 3A thread fit for high precision. It meets ASTM A574 specifications for alloy steel socket head cap screws, ensuring consistent quality and performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental safety and restricts hazardous substances, supporting sustainable industrial practices.
