963904-1 is a MCP 1.5K tab contact terminal in strip form, part of the TE Connectivity HDSCS connector series designed for industrial and commercial transportation applications. This terminal accommodates wire sizes from 0.5 to 1.0 mm² with insulation diameters ranging from 1.4 to 2.1 mm. The contact is constructed from CuNiSi material with pre-tin plating (finish code -1), select gold plating (-2), or select silver plating (-3). Compatible with hand tool 539635-1 and die set 539651-2, as well as mechanical applicator 2151170-1 and pneumatic applicator 2151170-2. These terminals are ideal for harsh environment applications in tractors, construction equipment, trucks, and boats where protection from vibration, moisture, dust, and dirt is essential.