S-98201A412 5/16"-18 x 1 1/8" Exact-Grip-Length Flanged Socket Head Screws
Exact-Grip-Length Flanged 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 corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments.
- High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration.
- Precise Class 3A thread fit provides superior engagement and reduces the risk of cross-threading during assembly.
- Integrated flange design eliminates the need for a separate washer, distributing load evenly and speeding up installation.
- 1/4" hex socket drive allows for high-torque application with standard tools, preventing cam-out and tool slippage.
- Coarse UNC threads enable quick assembly and disassembly, even in applications with debris or minor damage.
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and global market acceptability.
Professional Applications & Engineering Value
This Socket Head Cap Screw in 18-8 Stainless Steel is engineered to address critical challenges in industrial settings, such as corrosion in humid or chemical-exposed environments. The Class 3A thread fit and coarse UNC threading provide secure fastening in high-vibration machinery, reducing maintenance downtime. Its partially threaded design with a defined grip length ensures optimal clamping force on materials, preventing joint failure. The flanged head offers a larger bearing surface, protecting softer materials from damage and simplifying assembly in tight spaces. Ideal for automotive, manufacturing, and heavy equipment applications, this screw delivers long-term reliability and performance under demanding conditions.
Specification Summary & Compliance
This screw adheres to inch system measurements with a 5/16"-18 UNC coarse thread and Class 3A precision tolerance for consistent fit. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. Manufactured to high standards, it features a Rockwell B83 hardness and 80,000 psi tensile strength, suitable for rigorous industrial use.
