S-96640A155 1/4"-20 x 1" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws
Stainless Steel Phillips Flat Head 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 Black-Oxide coated 18-8 Stainless Steel, ideal for harsh industrial environments
- Superior tensile strength of 80,000 psi ensures reliable, long-term fastening under heavy loads
- Rockwell B80 hardness provides excellent durability and resistance to wear and deformation
- Fully threaded design maximizes grip and holding power across the entire length
- Standard 82° countersink angle allows for flush mounting, reducing snagging and improving safety
- Class 2A thread fit with coarse UNC threading enables quick installation and secure engagement in various materials
- No. 3 Phillips drive offers efficient torque transfer and ease of use with common tools
Professional Applications & Engineering Value
These 1/4"-20 UNC flat head screws are engineered to address critical industrial fastening challenges. The Black-Oxide 18-8 Stainless Steel construction provides outstanding corrosion resistance, making them suitable for outdoor equipment, marine applications, and chemical processing plants where moisture and corrosive agents are present. The fully threaded design and coarse UNC thread ensure rapid assembly and strong retention in metals, plastics, and wood, reducing installation time and minimizing the risk of loosening under vibration. With an 82° flat head profile, they sit flush with surfaces, preventing interference in machinery and enhancing aesthetic appeal in visible applications. These screws deliver reliable performance in industrial assembly lines, automotive components, and structural frameworks, where consistent clamping force and longevity are paramount.
Specification Summary & Compliance
These screws feature precise Class 2A thread fit and UNC coarse threading for consistent engagement and ease of use. Manufactured in compliance with ASME B18.6.3 specifications, they ensure dimensional accuracy and interoperability. Additionally, they are RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety standards for hazardous substances.
