S-91772A638 5/16"-18 x 3 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.
- Enhanced durability and longevity from 70,000 psi tensile strength and Rockwell B70 hardness, reducing replacement frequency.
- Reliable fastening in demanding applications due to UNC coarse threads and Class 2A thread fit for consistent performance.
- Easy installation and removal with Phillips No. 4 drive and rounded pan head design, minimizing tool slippage.
- Versatile partial threading allows for precise clamping force control in various assembly setups.
- Compliance with industry standards including ASME B18.6.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.
- Broad compatibility with inch-system components, making it suitable for diverse industrial machinery and equipment.
Professional Applications & Engineering Value
This 5/16"-18 x 3 1/2" passivated 18-8 stainless steel rounded head screw is engineered to address common industrial challenges such as corrosion-induced failures and inconsistent fastening in high-stress environments. The UNC coarse thread design ensures quick assembly and robust holding power, while the partial threading provides flexibility for applications requiring adjustable grip lengths. Made from 18-8 stainless steel with a passivated surface, it offers exceptional resistance to moisture, chemicals, and oxidation, extending service life in sectors like manufacturing, automotive, and construction. The Phillips drive and rounded pan head facilitate efficient installation, reducing labor time and enhancing operational reliability in heavy-duty industrial applications where precision and durability are critical.
Specification Summary & Compliance
This screw adheres to precise dimensional standards, including a Class 2A thread fit for reliable engagement and UNC coarse threads with a size of 5/16"-18. It meets ASME B18.6.3 specifications for quality and performance, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.
