S-92949A189 8-32 x 3/16" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws
Stainless Steel Button Head Hex-Drive 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 thanks to 18-8 Stainless Steel and a passivated finish, ideal for harsh industrial environments.
- Superior fastening precision and reliability with a Class 3A thread fit, minimizing the risk of cross-threading and ensuring secure assemblies.
- High mechanical strength and durability from a 70,000 psi tensile strength and Rockwell B55 hardness, supporting demanding applications.
- Efficient installation and removal using a 3/32" hex drive, providing a secure tool grip and reducing assembly time.
- Versatile coarse threading (UNC) for rapid installation and strong holding power in a wide range of materials.
- Low-profile, rounded button head design offers a finished appearance and reduces the risk of snagging in compact spaces.
- Full threading along the 3/16" length ensures maximum grip and consistent clamping force across the entire fastener.
Professional Applications & Engineering Value
This 8-32 UNC Rounded Head Screw is engineered to solve critical challenges in precision assembly. The 18-8 Stainless Steel construction, combined with a passivated finish, provides outstanding resistance to oxidation and chemical exposure, making it perfect for electronics enclosures, machinery panels, and automotive components where environmental durability is paramount. The Class 3A thread fit and coarse thread spacing ensure quick, reliable engagement, reducing installation errors and maintenance downtime. Its hex drive and button head profile allow for secure tooling in confined spaces, delivering consistent performance in high-vibration or load-bearing industrial applications.
Specification Summary & Compliance
This screw adheres to Class 3A dimensional tolerances for unified coarse (UNC) threads, ensuring precise fit. It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory standards, confirming its suitability for global industrial use without hazardous substances.
