S-91793A117 4-40 x 1 1/4" ASME B18.6.3 Stainless Steel Binding Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh industrial environments.
• High-strength performance offering 100,000 psi tensile strength and Rockwell B100 hardness for reliable, long-lasting fastening.
• Easy installation and removal thanks to the slotted drive style and wide, rounded binding head design.
• Secure thread engagement with fully threaded UNC coarse threads and Class 2A fit, ensuring vibration resistance.
• Broad compatibility with a 1-1/4" length and 4-40 thread size, suitable for various assembly applications.
• Binding head profile provides a wide bearing surface to prevent pull-through in softer materials.
• Compliance with major standards including ASME B18.6.3, RoHS 3, and REACH, guaranteeing quality and environmental safety.

Professional Applications & Engineering Value

These 4-40 UNC rounded head slotted screws are engineered to address common industrial challenges such as material fatigue and environmental degradation. The 18-8 stainless steel construction, combined with a passivated finish, provides exceptional resistance to rust and chemicals, making them ideal for electronics, machinery, and outdoor equipment. The binding head style and coarse thread design ensure quick, secure fastening in applications requiring frequent adjustments or high vibration resistance. By meeting ASME B18.6.3 specifications, these screws deliver consistent performance in precision assemblies, reducing the risk of failure and maintenance costs.

Specification Summary & Compliance

This screw features a Class 2A thread fit with UNC coarse threads, ensuring dimensional accuracy and ease of assembly. It complies with ASME B18.6.3 manufacturing standards and is certified RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, adhering to strict environmental and safety regulations for industrial use.