S-91773A112 4-40 x 5/8" ASME B18.6.3 Stainless Steel Round Head Phillips Screws
Stainless Steel Round 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
- Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments.
- Superior tensile strength of 100,000 psi provides reliable fastening under high-stress conditions, reducing failure risks.
- Precise Class 2A thread fit with UNC coarse threading ensures easy installation and secure engagement in various materials.
- Fully threaded design maximizes grip and load distribution across the entire 5/8" length for consistent performance.
- Rockwell B100 hardness offers excellent durability and resistance to wear during repeated use.
- Phillips No. 1 drive allows for efficient installation with standard tools, minimizing assembly time.
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety regulations.
Professional Applications & Engineering Value
These 4-40 UNC coarse thread screws are engineered to address common industrial challenges, such as corrosion-induced failures and assembly inefficiencies. The 18-8 stainless steel material combined with a passivated finish provides robust protection against moisture and chemicals, making them ideal for applications in machinery, electronics, and outdoor equipment. The rounded head design and Phillips drive facilitate quick, secure fastening without damaging surfaces, while the fully threaded configuration ensures uniform stress distribution. This screw is a reliable solution for maintaining structural integrity in demanding environments, reducing maintenance costs and downtime.
Specification Summary & Compliance
This product features a Class 2A thread fit per UNC standards, ensuring dimensional accuracy and compatibility. It meets ASME B18.6.3 specifications for consistency and performance, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for industrial use.
