BlueTR3A-5EKT Posted October 11, 2013 Report Share Posted October 11, 2013 (edited) Here is an aircraft bolt that will probably do for the dowel bolts on your TR5-250-6 engine to gearbox attachment. They are close tolerance 3/8" shank with a 3/8 unf thread. Be sure they are the right length - They are advertised as 1" grip length which should do. http://www.ebay.co.uk/itm/10-x-3-8-UNF-Close-Tolerance-Hex-Head-Bolts-Part-NAS6606-17-I4-/130896612945?pt=UK_CPV_Aviation_SM&hash=item1e7a0bce51 Cheers Peter W Edited October 12, 2013 by BlueTR3A-5EKT Quote Link to post Share on other sites
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