S-91772A916 6-40 x 3/16" 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
- Superior corrosion resistance with passivated 18-8 stainless steel construction for extended service life in harsh environments
- High tensile strength of 70,000 psi ensures reliable fastening performance under demanding mechanical loads
- Precision Class 2A thread fit provides consistent engagement and reduces cross-threading risks during assembly
- Fine UNF threading delivers enhanced vibration resistance and superior clamping force distribution
- Rockwell B70 hardness maintains thread integrity and prevents stripping during repeated installations
- Phillips drive design enables efficient installation with standard tools while minimizing cam-out
- Full threading along 3/16" length allows maximum adjustability and secure fastening in various material thicknesses
Professional Applications & Engineering Value
These 6-40 UNF pan head screws deliver exceptional engineering value across industrial applications where corrosion resistance and mechanical reliability are critical. The passivated 18-8 stainless steel construction provides superior protection against chemical exposure and atmospheric corrosion, making these fully threaded fasteners ideal for electronics enclosures, precision instruments, marine equipment, and food processing machinery. The combination of fine thread spacing and Class 2A thread fit ensures vibration-resistant connections in dynamic environments, while the pan head design with Phillips drive facilitates quick installation without specialized tools. These screws effectively address common industrial challenges including material degradation, thread failure, and assembly inefficiency.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerance for precision engagement. The UNF thread type with fine pitch (40 TPI) and right-hand orientation ensures compatibility with standard components. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations guarantees safe use across regulated industries. Mechanical properties include consistent 70,000 psi tensile strength and Rockwell B70 hardness for dependable performance in critical applications.
