S-91249A058 2-56 x 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
- Exceptional corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for humid or chemically aggressive environments.
- High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration.
- Class 2A thread fit provides consistent, easy assembly with standard UNC coarse threads for reduced cross-threading risks.
- Fully threaded design maximizes grip and load distribution across the entire length for secure fastening.
- Rockwell B70 hardness offers excellent wear resistance, maintaining thread integrity through repeated use.
- Pan head with Phillips drive allows for flush installation and efficient torque application with common tools.
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees quality, safety, and environmental standards for global industrial use.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 2-56 UNC Rounded Pan Head Phillips Screws address common challenges like corrosion, mechanical stress, and assembly efficiency. The Black-Oxide 18-8 Stainless Steel material combats rust and oxidation, extending service life in applications such as electronics enclosures, machinery panels, and outdoor equipment. With a coarse thread and Class 2A fit, installation is swift and secure, minimizing downtime in production lines. The fully threaded design ensures uniform clamping force, preventing loosening in high-vibration environments like automotive or aerospace assemblies, while the Phillips drive facilitates quick fastening with standard tools, enhancing workflow productivity.
Specification Summary & Compliance
This screw features precise UNC coarse threads with a Class 2A thread fit for standard tolerance and easy engagement. Dimensions include a 2-56 thread size, 1/2" length, and pan head profile. It conforms to ASME B18.6.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring no hazardous substances and adherence to international environmental and safety standards.
