M18 x 1.5 Fine Thread ID

[AlliedAuto]

I'm looking to find out if a 16mm dia shaft will fit through an M18 x 1.5 tapped hole wih clearance?

 

[eromlignod]

An M18 x 1.5 internal thread has a minumum minor dia. of 16.376 mm, so you've got a clearance of at least .38 mm.

Don
Kansas City

 

[satchmo]

Yes, by about a half a mm. Look up the root diameter or tap drill size for M18x1.5 to verify.

 

[AlliedAuto]

Just to make sure, M18 x 1.5 is a fine thread?

 

[mcgyvr]

yes M18 x 1.5 is considered fine pitch

 

[rmw]

M18 X 1.5 IS fine pitch.