S-91772A103 4-40 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 environments and extended service life.
- Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high stress.
- Precise and reliable fastening ensured by the Class 2A thread fit and UNC coarse threading, providing consistent engagement and reducing cross-threading risks.
- Efficient installation and removal with the No. 1 Phillips drive and rounded pan head design, enabling quick assembly with standard tools.
- Full-threaded design for maximum grip and holding power along the entire 1/8" length, enhancing joint integrity.
- Compliance with major standards including ASME B18.6.3 for dimensional accuracy, plus RoHS and REACH for environmental safety.
- Versatile right-hand threading compatible with common industrial components, ensuring broad applicability.
Professional Applications & Engineering Value
This 4-40 UNC machine screw is engineered to address critical challenges in precision assemblies, such as vibration resistance and corrosion prevention. The passivated 18-8 stainless steel material provides a durable barrier against moisture and chemicals, reducing maintenance in industrial equipment, electronic enclosures, and automotive components. Its rounded pan head and Phillips drive facilitate secure, flush mounting without snagging, while the coarse thread spacing and Class 2A fit ensure rapid installation and reliable torque performance. By meeting ASME B18.6.3 specifications, it guarantees dimensional consistency, minimizing assembly errors and downtime in high-volume production environments.
Specification Summary & Compliance
This screw adheres to Class 2A thread fit and UNC coarse thread standards for precise dimensional tolerance. It is manufactured in compliance with ASME B18.6.3 for mechanical and threading requirements. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free from hazardous substances and safe for various industrial applications.
