(Reuters) - Kobe Steel Ltd's 5406.T tampering with specifications has led to a scramble among the 525 customers currently affected to check the safety of their cars, planes, trains and other products.

The metals from Kobe Steel whose specifications have been falsified have been used in a dizzying array of products including air conditioners, Blu-ray discs, car doors, computer chips, copper pipes, heat exchangers, gear boxes, nuclear power plant parts, ship engines and space ships.

No safety issues have been reported.

Customers that have received falsely certified parts include:

Automakers

Toyota Motor Corp 7203.T, Nissan Motor Co 7201.T, Honda Motor Co 7267.T, Mazda Motor Corp 7261.T, Subaru Corp 7270.T, Mitsubishi Motors Corp 7211.T and Daihatsu Motor Co Ltd 7267.T.

Aerospace

Honda said affected products have been used in its HondaJet, the first aircraft developed by an automaker since World War Two.

Other affected manufacturers include the world's biggest maker of passenger jets Boeing Co BA.N, Mitsubishi Heavy Industries Ltd 7011.T and IHI Corp 7013.T.

Railways

Railway operators across Japan including Central Japan Railway Company Co 9022.T (JR Tokai), East Japan Railway Co 9020.T (JR East), West Japan Railway Co 9021.T (JR West), Tokyo Metro Co Ltd and Hankyu Hanshin Holdings Inc 9042.T.

Utilities

Chugoku Electric Power Co Inc 9504.T, Hokuriku Eletric Power Co 9505.T, Japan Nuclear Fuel Ltd, Kansai Electric Power Co Inc 9503.T, Kyushu Electric Power Co Inc 9508.T and Tokyo Electric Power Company Holdings Inc 9501.T (Tepco).

Other products using affected metals include:

Air conditioners from Mitsubishi Electric Corp 6503.T.

Aircraft parts and engine components from Kawasaki Heavy Industries Ltd 7012.T.

Blu-ray discs from Panasonic Corp 6752.T.

Cooling equipment from Toshiba Corp 6502.T.

Defense equipment from makers MHI, IHI, Kawasaki Heavy and Komatsu Ltd 6301.T.

Gearboxes for aircraft and vacuum pumps from Shimadzu Corp 7701.T.

Heat exchangers from Toyota-affiliated parts manufacturer Denso Corp 6902.T.

Motorcycles from Suzuki Motor Corp 7269.T.

Ship engines from Mitsui Engineering & Shipbuilding Co Ltd 7003.T.

Kobe Steel is integrated into global supply chains, supplying metals to companies including Bosch Ltd BOSH.NS, Hyundai Motor Co 005380.KS, Kia Motors Corp (000270.KS), Ford Motor Co F.N and Rolls-Royce Holdings PLC RR.L.

The steelmaker makes wire rod for engine valve springs found in half the world’s cars, aluminum discs for half of the world’s hard drives and 40 percent of the engine crankshafts used in large ships.

Kobe Steel is Asia’s No.1 manufacturer of semiconductor leadframes, the base material for chips, and one the world’s top makers of the large forged casks used to store spent nuclear fuel.