Abstract: A wound bobbin coil apparatus includes a coil form having a generally cylindrical surface having disposed at axial extremeties thereof generally circular side flanges. The coil form includes generally L-shaped cooperating locking member extending respectively from the generally circular side flanges, said locking members include means for locking engagement therebetween and include means for engaging a plurality of associated wires. The L-shaped locking members have at least one face thereof having a plurality of upstanding bosses disposed thereon in spaced relationship to allow entrance of termination wires therebetween.