What are the markings on the heads of the exhaust hanger bolts . Fine or coarse thread . Thanks
1957 C1 exhaust hanger bolts
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Re: 1957 C1 exhaust hanger bolts
Dan, these bolts nuts are from the AIM Section 8 sheet 1. # 106325 (view B) is only used for this application in '57 and we've seen UR & L head marks. #119034 (view B) is a carriage bolt either plain or W and only used for this application in '57. #120854 (view A) have seen UR, L, or TR. #120854 is used multiple places in '57. Gary....NCRS Texas Chapter
https://www.ncrstexas.org/
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