He was born on the 27th of October, 1918, in the village of Zorgol, now in the Priargunsky district of the Transbaikalian territory in a peasant family. His family had many children, and Nazar was able to finish only 5 classes in the new Tsurukhaitui a seven-year-school. In the future he worked on a collective farm helping the family around the house. In 1937 he entered the factory apprenticeship school in Chita. He graduated as a machinist, worked in the Chita locomotive depot. Then he moved to the Chernovsky coal mines, worked as a fuse-bomber at the V. I. Lenin mine. In October 1939 he was called up into the Red Army by the Chita city military commissariat. At first he served as a red army soldier in the infantry, then he graduated from the school of junior aviation specialists. He served as a weapons master in a bomber regiment in the city of Mogilev (Byelorussian SSR). On the fronts of the Great Patriotic War he did his service since October 1941. At first he remained a gunsmith, preparing aircraft weapons - loading machine guns, hanging bombs. He carried out his responsible work in good faith but he wanted to personally beat the Nazis, so every day he asked the commander to appoint him to the crew as a gunner-radio operator. The sergeant had long since mastered this specialty: with the help of his comrades he had studied the radio station well and he knew the weapon perfectly and he shot accurately from a machine gun. In the report to the commander Gubin wrote: “I assure you that I have the strength and will to repel the enemy's attacks at any moment. I will fight as long as my Komsomol heart beats, and if necessary, I will give my life for the Motherland.” At the end of November sergeant Gubin, who was allowed to fly as an air gunner-radio operator, replaced the wounded gunner-radio operator Fedotov in the crew of Ivan Chernykh. In the first flight he proved to be a skilled and persistent warrior, matching the other crew members. He completed 5 combat missions. On the 16th of December, 1941, the crew of Chernykh I. S. (gunner-bombardier Kosinov S. K., air gunner-radio operator Gubin N. P.) was assigned the task of attacking a column of enemy equipment near the city of Chudov. When entering the target, the plane was hit by anti-aircraft artillery. Despite the damage the crew dropped bombs on the target. The gunman continued to fire his machine gun. The flames could not be brought down and then the crew decided to go to a ram attack. The burning plane crashed into the thick of enemy vehicles. By decree of the Presidium of the Supreme Soviet of the USSR of the 16th of January, 1942, sergeant Nazar Petrovich Gubin was posthumously awarded the title Hero of the Soviet Union for exemplary performance of combat tasks of the command on the front of the fight against the Nazi invaders and for his courage and heroism.