S-91772A568 1/4"-28 x 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
- 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 industrial loads
- Precision Class 2A thread fit provides consistent engagement and vibration resistance in critical assemblies
- No. 3 Phillips drive design offers efficient installation with standard tools while minimizing cam-out risks
- Fully threaded UNF fine spacing delivers maximum grip length and superior holding power in thin materials
- Compliance with ASME B18.6.3 standards guarantees dimensional accuracy and interchangeability in professional applications
- Environmental regulation compliance including RoHS 3 and REACH ensures safe use across global markets
Professional Applications & Engineering Value
This passivated 18-8 stainless steel pan head screw addresses critical engineering challenges in industrial fastening where corrosion resistance and mechanical reliability are paramount. The combination of Rockwell B70 hardness and 70,000 psi tensile strength provides exceptional durability against stress and fatigue in machinery, electrical enclosures, and structural assemblies. The UNF fine thread configuration with Class 2A fit ensures precise mating with tapped holes, reducing the risk of cross-threading while maintaining consistent clamping force in vibration-prone environments. The rounded pan head profile with No. 3 Phillips drive facilitates quick installation in confined spaces while providing a clean, low-profile appearance for finished products.
Specification Summary & Compliance
Manufactured to exact ASME B18.6.3 specifications with Class 2A thread fit tolerance for precision assembly. Features 1/4"-28 UNF fine threads with 2" fully threaded length and standard pan head design with 0.492" diameter. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for restricted substance control.
