S-98201A315 1/4"-20 x 1 15/16" 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 industrial environments.
- Exceptional holding power from 80,000 psi tensile strength and Rockwell B83 hardness for reliable, long-term fastening.
- Precise thread engagement with Class 3A thread fit, ensuring consistent performance and reduced risk of cross-threading.
- Integrated flange design eliminates the need for a separate washer, providing a larger bearing surface and simplified installation.
- Secure hex drive compatibility with a 3/16" drive size, allowing for high torque application and reduced tool slippage.
- Optimized load distribution through a partially threaded shank and 1-1/2" grip length, minimizing stress concentration.
- Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries.
Professional Applications & Engineering Value
This 1/4-20 UNC flanged socket head cap screw is engineered to address critical challenges in machinery assembly, automotive, and heavy equipment manufacturing. The 18-8 stainless steel provides excellent resistance to oxidation and chemical exposure, making it suitable for outdoor or corrosive settings. Its Class 3A thread fit and coarse UNC thread offer superior vibration resistance and faster installation in high-stress applications. The flanged head enhances clamping force distribution, reducing the risk of material damage and loosening under dynamic loads. With a partially threaded design, it ensures precise clamping on specific sections, improving joint integrity in structural and precision engineering projects.
Specification Summary & Compliance
This fastener adheres to UNC coarse thread standards with a precise Class 3A thread fit for consistent dimensional accuracy. It is manufactured in accordance with industry specifications for socket head cap screws in the inch system, featuring a length of 1-15/16" and a thread length of 7/16". The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.
