S-91772A118 4-40 x 1 1/8" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance thanks to passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
- High tensile strength of 70,000 psi provides exceptional load-bearing capacity and resistance to mechanical failure.
- Rockwell B70 hardness offers excellent durability and wear resistance for repeated use in demanding applications.
- Class 2A thread fit with UNC coarse threading ensures easy installation and reliable fastening in various materials.
- Fully threaded design maximizes grip and holding power along the entire 1 1/8" length.
- Phillips No. 1 drive with rounded pan head allows for secure tool engagement and a low-profile, finished appearance.
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental regulations for safe use.
Professional Applications & Engineering Value
This 4-40 UNC rounded pan head Phillips machine screw is engineered to address critical fastening challenges in industrial and mechanical assemblies. The passivated 18-8 stainless steel material provides excellent resistance to oxidation and chemical exposure, making it ideal for applications in electronics, machinery, and outdoor equipment where moisture or corrosive agents are present. The coarse UNC thread and Class 2A fit facilitate quick and secure installation, reducing assembly time while maintaining vibration resistance. With a fully threaded 1 1/8" length and Phillips No. 1 drive, it ensures consistent clamping force and easy access in confined spaces, delivering reliable performance in automotive, aerospace, and consumer durable sectors.
Specification Summary & Compliance
This screw features precise Class 2A thread fit with UNC coarse threading (4-40 size) and meets ASME B18.6.3 manufacturing standards for dimensional accuracy. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial markets.
