S-98201A311 1/4"-20 x 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
- Precise Class 3A thread fit ensures reliable engagement and reduces the risk of cross-threading during assembly
- High tensile strength of 80,000 psi provides exceptional load-bearing capacity for demanding applications
- Flanged design distributes clamping force evenly, eliminating the need for separate washers
- Rockwell B83 hardness offers excellent wear resistance and maintains thread integrity under vibration
- 3/16" hex drive allows for high-torque installation with standard tools, speeding up assembly processes
- Full RoHS 3 and REACH compliance meets international environmental standards for safe usage
Professional Applications & Engineering Value
This 1/4"-20 UNC Socket Head Cap Screw delivers critical performance in industrial fastening applications where reliability is paramount. The 18-8 Stainless Steel material provides excellent resistance to oxidation and chemical exposure, making it suitable for machinery, automotive assemblies, and outdoor equipment. Its Class 3A thread fit and coarse thread spacing enable quick installation and secure holding in high-vibration environments. The flanged design increases bearing surface area, preventing surface damage and maintaining joint integrity. With a partially threaded shank, it offers optimal grip length control for precise clamping in heavy-duty applications, reducing the risk of loosening over time.
Specification Summary & Compliance
This socket head cap screw features a 1/4"-20 UNC thread with Class 3A precision fit, ensuring tight tolerances per inch system standards. It includes a right-hand thread direction and coarse thread spacing for efficient assembly. Manufacturing adheres to strict quality controls, with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material traceability.
