S-98201A411 5/16"-18 x 1" 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
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
- Exceptional tensile strength rated at 80,000 psi, providing high load-bearing capacity and secure fastening in demanding applications.
- Precise Class 3A thread fit ensures tight tolerances and reliable engagement, reducing the risk of loosening under vibration.
- Integrated flange design eliminates the need for a separate washer, distributing load evenly and speeding up assembly.
- 1/4" hex drive socket head allows for high-torque installation with standard tools, offering secure, flush-mount fastening.
- Partially threaded shank with 1/2" thread length provides optimal grip and alignment, minimizing stress concentration.
- Full compliance with RoHS 3 and REACH regulations, ensuring environmental safety and suitability for global industrial markets.
Professional Applications & Engineering Value
This 5/16"-18 UNC flanged socket head cap screw is engineered to address critical challenges in machinery, automotive, and structural assemblies where vibration resistance and corrosion are concerns. The 18-8 stainless steel material offers excellent durability against moisture and chemicals, while the coarse UNC thread and Class 3A fit ensure quick, secure installation with minimal cross-threading risk. The flanged head enhances stability and reduces surface damage, making it ideal for high-stress applications like equipment frames, conveyor systems, and precision enclosures. With a Rockwell B83 hardness and robust construction, it delivers consistent performance in industrial settings, reducing maintenance needs and downtime.
Specification Summary & Compliance
This screw adheres to UNC coarse thread standards with a Class 3A thread fit for precise dimensional accuracy. It features a right-hand thread direction, 1/2" thread length, and partially threaded design for controlled grip. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets stringent environmental and safety requirements for industrial fasteners.
