S-90277A105 4-40 x 3/16" ASME B18.6.3 Steel Binding Head Slotted Screws
Steel Binding 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
- Enhanced corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments.
- Superior tensile strength rated at 60,000 psi, ensuring reliable performance under high-stress applications.
- Excellent thread engagement with Class 2A thread fit and coarse UNC threading, providing secure fastening and reduced cross-threading risk.
- Wide rounded binding head design offers increased bearing surface for better load distribution and reduced surface damage.
- Convenient installation and removal via slotted drive, compatible with standard tools for efficient assembly.
- Full threading along the 3/16" length allows for maximum grip and adjustability in various material thicknesses.
- Compliance with major industry standards including ASME B18.6.3, RoHS 3, and REACH, ensuring safety and regulatory adherence.
Professional Applications & Engineering Value
These 4-40 UNC zinc-plated steel rounded head screws are engineered to address common industrial fastening challenges, such as vibration loosening and corrosion-induced failure. The binding head style with a wide profile distributes clamping force effectively, minimizing pull-through in softer materials. Made from zinc-plated steel, they provide a durable barrier against moisture and chemicals, ideal for electronics, machinery, and automotive assemblies. The coarse thread spacing and Class 2A thread fit ensure quick, secure installation in coarse-grained materials, reducing assembly time and improving reliability in high-volume production environments. Fully threaded design guarantees consistent holding power across the entire 3/16" length, making them versatile for precision engineering applications.
Specification Summary & Compliance
This product adheres to Class 2A thread fit tolerances and UNC thread standards for consistent performance. Manufacturing complies with ASME B18.6.3 specifications, ensuring dimensional accuracy and reliability. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting environmental and safety regulations in global supply chains.
