321286 is a pre-insulated solderless butt splice terminal designed for reliable termination of 12-10 AWG (1160-13100 circular mils) wire connections. The terminal features yellow insulation color coding for easy wire size identification and accommodates dual wire insulation diameters of 0.250 inches and 0.165 x 0.315 inches, providing flexibility for various wire configurations. The splice utilizes a serration or dimple feature inside the terminal barrel to provide exceptional barrel contact and tensile strength, combined with a special plating process that creates high resistance to corrosion. This terminal is UL, CSA, and Military approved, making it suitable for applications ranging from control circuits to heavy-duty power wiring where reliable, high-quality terminations are essential.