Fine thread or coarse thread

jamesmundstock

Working on a 1937 Terraplane pickup. Are all body fasteners fine thread? Were any coarse threads used? Thanks in advance for the replies.

Jon B

If you look on page 107 of the 1937 parts manual, you'll see several sizes of body bolts and shims shown, for various body styles and models. 3/8"-24 seems to be a common size for body bolts, although there are different lengths. I believe 3/8"-24 is considered a fine thread.