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Old 10-25-2020, 08:27 PM
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Default What are these?

Since I have come up with a lathe, metal has been showing up I might be able to do something with.

These showed up and I don't know what they are. any thoughts from the group?

Scott
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Old 10-25-2020, 08:44 PM
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Headspace checker for friggen cannon???
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Old 10-25-2020, 09:14 PM
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Locating pins for machining something.
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Old 10-26-2020, 07:54 AM
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Quote:
Originally Posted by Norm W View Post
Locating pins for machining something.
by the nips taken out of the edges, I would say they were used on a mill.
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Old 11-01-2020, 11:09 AM
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We used things similar on our 707’s for pre final Assembly pins. The partial notch is to repeat an exact location and the full notch would be for securing.

At least in my world they were.

A fee instance were the 4 bottle pins that held the wing to the fuselage of the plane. Two on left side a two on the right. Of the two each, one fwd and one aft each side.

These pins were about 5” in diameter and almost 12 inches long.

The full wing could be dropped from the fuselage at those points.

In the history of Boeing’s 707’s (any model/version), we were the only repair station to do so. Scared the crap out of Boeing engineers when we asked for thedata to do so. Lol
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Last edited by LW Hiway; 11-01-2020 at 11:18 AM.
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Old 11-01-2020, 01:07 PM
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Thanks Jef

Lot of aircraft here so I thought it was cnc stuff. These are about 8 inches long total.

Scott


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Old 11-01-2020, 01:26 PM
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One other possibility is that they are mandrels used for swaging the ends of tubes--the locating pin idea is probably more valid, however. Pretty sure the 30 and 56 stamped on them refers to the diameter in millimeters...
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