S-91773A123 5-40 x 3/16" 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
- Superior corrosion resistance thanks to 18-8 stainless steel construction with passivated finish, ideal for harsh industrial environments.
- Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for reliable, long-term fastening performance.
- Efficient installation and removal with No. 2 Phillips drive and fully threaded coarse (UNC) design, reducing assembly time.
- Precise thread engagement ensured by Class 2A thread fit, providing consistent clamping force and vibration resistance.
- Broad industry compliance meeting ASME B18.6.3 specifications, RoHS 3, and REACH standards for safe, regulated use.
- Versatile rounded head profile offers a standard, low-profile design that minimizes snagging and provides a finished appearance.
- Right-hand threading with coarse thread spacing ensures quick, secure fastening in a variety of materials.
Professional Applications & Engineering Value
Engineered for demanding environments, these 5-40 UNC rounded head screws deliver reliable performance in industrial machinery, electronics enclosures, and automotive assemblies. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to oxidation and chemical exposure, extending service life in corrosive conditions. The coarse thread and fully threaded design ensure strong holding power in both soft and hard substrates, reducing the risk of stripping. With a Phillips drive for straightforward installation, these screws minimize assembly errors and maintenance downtime, making them a cost-effective solution for high-volume production lines and precision equipment where consistent thread fit and durability are critical.
Specification Summary & Compliance
This screw features a 5-40 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy. It is manufactured in accordance with ASME B18.6.3 standards and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability for global industrial applications.
