Threading: Key Inserts

Key inserts are available for threaded holes on milled parts.

 

Threads Minimum modelled diameter (in.) Maximum modelled diameter (in.) >Maximum thread depth (in.)
#8-32 0.133 0.137 0.40
#10-32 0.16 0.164 0.60
#12-28 0.186 0.191 0.60
1/4-28 0.227 0.231 0.65
5/16-18 0.271 0.276 0.65
3/8-16 0.331 0.336 1.00
7/16-14 0.396 0.401 1.00
1/2-13 0.452 0.457 1.00
Note: Any countersinks required by the specification for the insert you plan to use should be in the CAD model. Thread size shown is the external thread of the key insert.