by DaveC » Tue May 08, 2018 11:14 pm
On the 69 the six long bolts (2-1/4") are plain (in house HD manufacture) and the short one is a CP 1038. The long ones were CP1038 from 57 to at least 62. I have seen a mix of HD (plane, no markings) and CP1038 on a original paint 65. There are several sources for the 2-1`4" fine thread CP1038 bolt. It is also used on the gas tanks, parkerized.