M7928/5-3, 320559 TE AMP Mil Spec Window Wire Closed Barrel Splice. The 320559 splice has a "Window" feature within splice that assists in wire splice inspection. This splice is for crimping to 22-18 AWG wire and is mil spec to M7928/5-3. Red insulation sleeve. Also known as NAS1388-1.
Diameter mm = 3.18 / Voltage Rating Max. V = 600 / Voltage Rating Min. V = 300 / Cross-Section Max. mm² = 1.42 / Terminal Material = Tinned Copper / Cross-Section Min. mm² = 0.3 / Insulated = Yes / Length mm = 32.1 / Insulator Material = Polyamide (PA) / Operating Temperature Max. °C = 105