S-91772A560 1/4"-28 x 5/8" 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, ideal for harsh industrial environments
- Exceptional tensile strength of 70,000 psi ensures reliable performance under high-stress applications
- Precise Class 2A thread fit provides smooth installation and secure fastening in UNF fine-threaded components
- Fully threaded design maximizes grip length and holding power across the entire fastener length
- Optimized Phillips No. 3 drive offers efficient torque transfer and reduced cam-out during installation
- Durable Rockwell B70 hardness maintains thread integrity and prevents stripping in repeated use
- Standard pan head profile with rounded edges provides a finished appearance and prevents snagging
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 1/4"-28 UNF fine thread pan head screws deliver critical performance advantages in machinery assembly, electronic enclosures, and precision equipment. The passivated 18-8 stainless steel construction provides excellent resistance to oxidation and chemical exposure, while the fully threaded design ensures maximum engagement in thin materials and blind holes. The Phillips No. 3 drive combines installation efficiency with widespread tool compatibility, reducing assembly time in high-volume production environments. These screws effectively address common challenges including vibration loosening, corrosion-induced failure, and thread stripping through their Class 2A thread fit and 70,000 psi tensile strength, making them ideal for applications requiring reliable, long-term fastening solutions.
Specification Summary & Compliance
This 5/8" length pan head screw features 1/4"-28 UNF fine threads with Class 2A fit for precision engagement. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
