S-91794A110 4-40 x 1/2" ASME B18.6.3 Stainless Steel Fillister Head Slotted Screws
Stainless Steel Fillister Head Slotted 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 with 18-8 Stainless Steel and passivated finish, ensuring longevity in harsh environments.
- Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance.
- Precise and secure fastening due to Class 2A thread fit and coarse UNC threading, reducing cross-threading risks.
- Easy installation and removal with a slotted drive and high, narrow fillister head for improved tool engagement.
- Full-threaded design maximizes grip and holding power along the entire 1/2" length for versatile applications.
- Compliance with industry standards including ASME B18.6.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.
- Durable rounded head profile provides a smooth finish and reduces snagging in assembled components.
Professional Applications & Engineering Value
This 4-40 UNC slotted fillister head screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. The 18-8 Stainless Steel material, combined with a passivated finish, offers robust protection against rust and chemical exposure, making it ideal for demanding environments like marine, automotive, and electronics. The coarse thread and Class 2A fit ensure quick, secure installations with minimal risk of stripping, while the high, narrow rounded head allows for flush mounting and enhanced torque application. Fully threaded for consistent clamping force, this screw provides reliable performance in precision assemblies where durability and compliance are critical.
Specification Summary & Compliance
This screw adheres to Class 2A thread fit and UNC coarse threading standards, ensuring dimensional accuracy and interchangeability. It conforms to ASME B18.6.3 specifications for slotted head screws and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for global industrial use.
