Press fit hole for ISO m6 dowel Press fit hole for ISO m6 dowel tlyter (Mechanical) (OP) 20 May 16 20:35 I need to press fit a 6mm diameter dowel pin into a part. The pin is ISO m6 (+4,+12)µm. Should I use a M6 ISO hole (-1,-9)µm? So many options... RE: Press fit hole for ISO m6 dowel drawoh (Mechanical) 20 May 16 20:38 tlyter, Look at the limits and fits in your Machinery's Handbook. FN1? -- JHG RE: Press fit hole for ISO m6 dowel tlyter (Mechanical) (OP) 20 May 16 21:07 Thanks JHG. I don't have one...need to get one, yes. RE: Press fit hole for ISO m6 dowel Tmoose (Mechanical) 22 May 16 00:37 Is the dowel to remain in the part permanently ? Or is disassembly for repair a possibility. RE: Press fit hole for ISO m6 dowel Occupant (Mechanical) 22 May 16 01:17 It is determined by the "m6", so make the hole "H7" - 0.0/+0.0005. Not a very tight fit,but good for locational accuracy. RE: Press fit hole for ISO m6 dowel juergenwt (Mechanical) 22 May 16 19:33 6m6 dowel pin (+4/+12), Hole H7 (+0/+12) is preferred for sliding (tight) to tapping (light press) fit. If you want a good press fit for an 6m6 dowel pin you will have to go with a hole size 6P7 = 6 -8/-20. Easy to remember P/p stands for "Press" on dowel pins. If you would like to use a 6H7 reamer (common size) than stone it lightly to make certain you get the type of press fit you want. A brand new 6H7 reamer comes with a tolerance of +5/+10. A brand new 6P7 reamer has a tolerance of -10/-15. RE: Press fit hole for ISO m6 dowel tlyter (Mechanical) (OP) 23 May 16 13:05 Thanks juergenwt. This will be used as a stop pin for a small device with low torque applied, so will need a good press fit. Thanks for the tip! And, thanks to all of you for the input. RE: Press fit hole for ISO m6 dowel KENAT (Mechanical) 23 May 16 21:27 Um, so for press fits the actual force required to do the pressing/resisting pull out may be more important than sticking to some standard tooling based on arbitrary fit classes. Additionally the stress imparted to the parts in so doing. Appropriate fit for SST into MIC-6 aluminum may be different from appropriate fit for high grade steel into high grade steel. Just saying. Posting guidelines FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm? (probably not aimed specifically at you) What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?