公制德制相对应的PG型电缆卡口范围(mm)国标D1内径(mm)D1内径(mm)D2内径(mm)M12PG73-6.512118pg9加长4-8161611.8M16PG94-8161611.8M18PG115-101817.813.8M20PG13.56-122019.520M22PG16PG1810-1422PG18-2418M24PG1912-152423.819M25PG19(六角螺母尺寸不一样)12-15252419M28PG21（六角螺母尺寸不一样）13-18282621.2M30PG2415-22302929.5M32PG25（六角螺母尺寸不一样）17-23322924.5PG27大些17-2232.732.731M36PG29（六角螺母尺寸不一样）18-25363730.8M4022-30403934.2PG36大些22-32464639M50PG42大些30-38505444PG4834-4459.5M5830-3858M6334-44636256.2M71PG6342-54717063.5)