help:a bolt on CFM56-7B engine
in BOEING 737ng IPC i find a bolt P/N is nas8703u4. and when i install on engine the bolt is a littler longer than the bolts on the engine.the effect code is right.and there is only P/N:nas8703u4 in the IPC for this bolt.who can tell me where is wrong？
by the way：the head of the bolt on the engine write ：-3 。and the head of the P/N：nas8703u4 write：-4。but it also can install on the engine。