* Internal report to be released at 0730 GMT
* CEO Kawasaki to hold news conference at 0800 GMT (Adds background, share price)
TOKYO, Nov 10 (Reuters) - Kobe Steel Ltd said it would announce on Friday the results of an internal investigation into the causes of a data-cheating scandal that has rocked the Japanese steelmaker and affected hundreds of its customers globally.
Japan's third-biggest steelmaker said it would release the internal report, which includes countermeasures to prevent a recurrence, at 4:30 p.m. (0730 GMT).
The 112-year-old company admitted last month that workers had tampered with product specifications for at least a decade, causing global automakers, aircraft manufacturers and other companies to check whether the safety or performance of their products had been compromised.
No safety issues have so far been identified from the data cheating, which mainly involves falsely certifying the strength and durability of products.
Kobe Steel was ordered by the Ministry of Economy, Trade and Industry (METI) last month to provide by around Nov. 12 a detailed explanation of the data cheating and say what steps it would take to prevent future abuses.
But the explanations may not be conclusive as the company has since appointed a trio of outside investigators who are due to report back by the end of the year.
Kobe Steel's internal probe also may not address questions of responsibility, as sources have told Reuters that Chief Executive Officer (CEO) Hiroya Kawasaki and other executives will decide whether to resign for the scandal happening on their watch only after the external report.
Kawasaki will hold a news conference at 5:00 p.m. (0800 GMT), after reporting to METI.
Kobe Steel, now the subject of a U.S. Justice Department inquiry as well, has had a Japanese government-sanctioned seal of quality revoked on some of its products and lost customers.
As of Tuesday, the company said 470 out of 525 affected customers found no safety issues or their products were deemed safe by Kobe Steel, up from 443 on Oct. 31.
The company has said it cannot yet fully state what impact the tampering will have on its finances. Last week, it pulled its forecast for its first annual profit in three years for the 12 months through next March.
Kobe Steel's shares have fallen by nearly a fifth since it revealed the data fabrication a month ago.
The company's shares were up 2 percent by 0558 GMT on Friday, while the Nikkei 225 was down 0.8 percent.
(Reporting by Yuka Obayashi; Writing by Aaron Sheldrick; Editing by Chang-Ran Kim and Tom Hogue)