S-91773A597 5/16"-18 x 3 1/2" ASME B18.6.3 Stainless Steel Round Head Phillips Screws
Stainless Steel Round 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
- Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments.
- High tensile strength of 100,000 PSI provides superior load-bearing capacity for demanding industrial applications.
- Precise Class 2A thread fit ensures smooth assembly and secure fastening, reducing installation time and improving joint integrity.
- Partially threaded design allows for controlled clamping force and prevents over-tightening in sensitive assemblies.
- Coarse UNC threading enables quick installation and high resistance to vibration loosening in dynamic settings.
- Phillips drive (No. 3 size) offers widespread tool compatibility and efficient torque transfer during installation.
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety regulations.
Professional Applications & Engineering Value
Engineered for industrial screw applications, this 18-8 stainless steel rounded head Phillips screw delivers reliable performance where corrosion resistance and mechanical strength are critical. The passivated finish enhances surface durability, preventing oxidation in humid or chemical-exposed environments like marine equipment, food processing machinery, and outdoor structures. Its partially threaded shank and coarse UNC thread design provide optimal grip in soft materials or assemblies requiring vibration resistance, reducing the risk of thread stripping and maintaining clamp load under stress. With a Rockwell B100 hardness and 100,000 PSI tensile strength, it withstands heavy-duty cyclic loads, making it ideal for construction, automotive, and machinery frameworks where failure is not an option.
Specification Summary & Compliance
This screw features a 5/16"-18 UNC thread with Class 2A fit for precise dimensional accuracy, ensuring consistent performance in standardized assemblies. It is manufactured in accordance with ASME B18.6.3 specifications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial use without hazardous substances.
