S-98201A512 3/8"-16 x 1 3/8" 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
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional load-bearing capability thanks to 80,000 psi tensile strength and Rockwell B83 hardness
- Precise, secure fastening with Class 3A thread fit ensuring tight tolerances and vibration resistance
- Integrated flange design eliminates the need for separate washers, distributing load evenly and speeding assembly
- Reliable hex drive engagement using a standard 5/16" hex key for high-torque applications without cam-out
- Optimized thread performance with UNC coarse threads and partial threading for controlled clamping force
- Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries
Professional Applications & Engineering Value
This flanged socket head cap screw is engineered to address critical challenges in heavy-duty assembly, where vibration loosening, corrosion, and high stress are common. The 18-8 stainless steel material provides excellent resistance to rust and chemical exposure, making it suitable for machinery, automotive, and outdoor equipment. The UNC coarse thread and Class 3A thread fit ensure rapid installation and reliable holding power in metals and composites, reducing maintenance needs. The built-in flange increases bearing surface, preventing surface damage and improving joint integrity. With a 5/16" hex drive, it allows for high torque application in confined spaces, supporting efficient production and long-term reliability in demanding industrial fasteners applications.
Specification Summary & Compliance
This screw adheres to UNC thread standards with a Class 3A thread fit for precise dimensional accuracy. It is manufactured with a partially threaded design, right-hand thread direction, and inch system measurements. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety requirements for industrial and commercial use.
