Singer 636E Touch & Sew repair/ replacement parts. Thread tension assembly #163213 complete with set screw #140756. Plus thread guide #163089 and spring guard #45345 with mounting screw #329. Should fit many T & S models including 600, 6021, 603, 604, 620, 620E, 620E31, 625, 626, 628, 629, 630, 630E, 635, 635E, 636, 638, 639, 640E, 645, 646 & 649. Price includes shipping to lower 48, return for refund if fails on your restoration.