S-91772A951 3/8"-16 x 4 1/2" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips 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 passivated 18-8 stainless steel construction, ideal for harsh industrial environments.
- High tensile strength of 70,000 psi ensures reliable, heavy-duty fastening without failure under stress.
- Rockwell B70 hardness provides excellent durability and resistance to wear and deformation.
- UNC coarse thread design allows for quick and easy installation, reducing assembly time.
- Class 2A thread fit guarantees consistent, precise engagement with mating parts for secure connections.
- Partially threaded shank offers optimal grip and clamping force in varied material thicknesses.
- Compliance with ASME B18.6.3, RoHS 3, and REACH ensures adherence to industry standards and environmental safety.
Professional Applications & Engineering Value
This passivated 18-8 stainless steel rounded head screw is engineered to address common industrial challenges, such as corrosion in demanding settings like marine, chemical processing, and outdoor equipment. The UNC coarse thread and Phillips drive No. 4 enable efficient installation in high-volume assembly lines, minimizing tool slippage and enhancing productivity. With its high tensile strength and Rockwell B70 hardness, it provides long-term reliability in structural applications, reducing maintenance needs and downtime. The partially threaded design ensures secure fastening in materials of varying thickness, making it a versatile choice for machinery, automotive, and construction projects where vibration resistance and durability are critical.
Specification Summary & Compliance
This screw adheres to precise dimensional standards, including a Class 2A thread fit for consistent accuracy and UNC coarse thread specifications. It meets ASME B18.6.3 for mechanical and dimensional requirements, ensuring interoperability and safety. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free from hazardous substances and suitable for global industrial use.
