At what serial number did IBM start using the round bolt?Information
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At what serial number did IBM start using the round bolt?Information
Warning: This is a relatively older thread
This discussion is older than 360 days. Some information contained in it may no longer be current.
according to Riesch 6th ed they began at 3900000. Don't know about you but I got a 379114* which calls for flat bolt; haven't seen a round one avail much less flat.
So I guess that means the round IBM bolt in my 369000 isn't the right bolt huh?
Dan, if you find the bolt, I can surely use it. Email me please: Clem@ptmc.net
You could use a flat or round bolt on 379114x. Many of the early round bolts that IBM used had an X marked on the top about 1/2 inch behind the lugs.
Indicates that the earliest IBM serial number with a round bolt is 3758483. The round bolts used in these earlier IBMs had an "x" stamped on them, "on top of the bolt, 1/2 inch behind the lug".
hth.