10KC7  (TGT0601  Worm Shaft)

Genuine Shimano Tiagra worm shaft (part #TGT0601, SKU 10KC7) — the helical-grooved shaft that drives the level wind mechanism back and forth across the spool. As the handle turns, the worm shaft's spiral groove guides the line guide carriage, distributing line evenly across the spool for optimal casting and drag performance. When the worm shaft wears, bends, or develops flat spots in its groove, line distribution becomes uneven, causing bunching, tangling, and reduced casting distance. Cross-references with Shimano part number TGT0601. OEM replacement restores precise, even line lay on your Tiagra trolling reel. Available from Offshore Tackle & Repair in Stuart, FL — your trusted source for genuine Shimano Tiagra trolling reel parts and professional reel rebuilds.