S-97181A102 4-40 x 3/8" ASME B18.6.3 Stainless Steel Pan Head Combination Phillips/Slotted Screws
Stainless Steel Pan Head Combination Phillips/Slotted 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
- Exceptional corrosion resistance from 316 stainless steel and passivated finish, ideal for harsh environments
- High tensile strength of 100,000 psi ensures reliable, long-lasting fastening under stress
- Versatile Phillips/Slotted drive provides flexible installation options with standard tools
- Class 2A thread fit guarantees consistent, precise engagement for reduced assembly issues
- Fully threaded coarse UNC design enables faster installation and superior holding power
- Compliance with ASME B18.6.3 ensures dimensional accuracy and interchangeability
- RoHS 3 and REACH compliance meets stringent environmental and safety regulations
Professional Applications & Engineering Value
These 4-40 UNC rounded head screws in 316 stainless steel are engineered to address critical challenges in industrial and marine settings where corrosion and mechanical stress are prevalent. The passivated finish significantly enhances resistance to chemicals, saltwater, and oxidation, prolonging service life in demanding applications like chemical processing equipment, marine hardware, and food machinery. The Phillips/Slotted drive offers installation flexibility, reducing tooling constraints on the production line. With a coarse thread and Class 2A fit, these screws provide rapid, secure fastening, minimizing cross-threading risks and ensuring consistent performance in assemblies requiring high reliability and ease of maintenance.
Specification Summary & Compliance
This product adheres to ASME B18.6.3 specifications, ensuring precise dimensional standards for the 4-40 UNC thread with Class 2A fit. The screws are fully threaded and manufactured from 316 stainless steel with a passivated finish, delivering consistent tensile strength of 100,000 psi and Rockwell B100 hardness. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms adherence to environmental and health safety regulations, making them suitable for global supply chains and sensitive applications.
