Terminology trivia: "LN1 fit with pin" ??

[MetalFlake]

Here's a new one for me. The print says LN1 fit with pin. Anyone see this before? Care to enlighten?

 

MF

[Guest CNC Apps Guy 1]

???

[Teh Bear without Brains kinda idiot]

That`s plotter ,right ?

[LNDCAD]

LN1 is a Locational Interference Fit (Light Press Fit). There are many sites on the web that will give the tolerance for this class of fit. Also, information can be found in the Machinist's Handbook (look under Fits / ANSI). The note LN1 fit to pin, indicates that the hole should provide a light press fit with the mating pin, and you will need the pin to get the actual dimensions. HTH.

[MetalFlake]

Guess I could have been more specific. I'm making a Airplane part that is defined from a blue print. One of the features on the part is a hole with a notation that say's LN1 fit with pin. I'm guessing that LN1 implies a press fit. Thats where I'm stuck. I don't know exactly what LN1 means.

 

MF

[BernieT]

I think I have seen that a long time ago. Is this a really old print?

 

I believe it is a callout for a fit tolerance, IOW, how loose can the pin be in the bushing.

 

Might check Machinerys Handbook.

 

HTH

[MetalFlake]

LNDCAD,

 

Many thanks!

 

MF

[jbel]

Machinery's Handbook 24 page 616 has a great chart with info on LN1 fits. If you have another edition just look up: Fits, cylindrical in the index