S-91772A511 3-56 x 1/8" 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 rated at 70,000 psi for reliable performance in demanding applications
- Precise Class 2A thread fit ensures smooth installation and secure fastening with consistent engagement
- Fully threaded design provides maximum grip length and uniform load distribution across the entire fastener
- Phillips drive with No. 1 size offers efficient installation with standard driving tools while minimizing cam-out
- Fine UNF threading delivers superior vibration resistance and improved clamping force retention
- Pan head profile combines low-profile appearance with excellent bearing surface for secure fastening
Professional Applications & Engineering Value
This 3-56 UNF pan head machine screw delivers exceptional engineering value in precision assemblies where corrosion resistance and high tensile strength are critical. The passivated 18-8 stainless steel construction provides superior protection against oxidation and chemical exposure, making it ideal for electronic enclosures, precision instruments, and medical devices operating in challenging environments. The fine UNF threading ensures secure fastening in thin materials and applications requiring vibration resistance, while the fully threaded design maximizes engagement in shallow mounting scenarios. The combination of Phillips drive and rounded pan head offers both installation efficiency and a professional finish that meets stringent industry requirements.
Specification Summary & Compliance
This machine screw features precision Class 2A thread fit with 3-56 UNF fine threading and right-hand thread direction. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial applications while maintaining the material's inherent corrosion-resistant properties.
