# Stab Pin Size For Check Gage

#### GunLake

##### Involved In Discussions
I'm trying to figure out what size Stab Pins should be for a check fixture because i believe they're doing it wrong here(newish job). I was looking at a gage today and the stab pins were very tight on the master part. So i wanted to investigate and found the pin they're using is .298 in size. The hole size is .310 +/- .005 with Position at 0.025(M).
The way i calculate it would be
.310 - .005 = .305
Then
.305 - .025 = .28

Is this correct?
I know its not a major difference but still could fail a good part.

Thanks,

#### Proud Liberal

##### Quite Involved in Discussions
• Is this for a single hole or a pattern of holes?
• Are any of the datum marked MMC?
• Are the datums being located RFS in the fixture?
• ...............?
Curious minds want to know.

#### GunLake

##### Involved In Discussions
• Is this for a single hole or a pattern of holes?
2 Holes side by side

• Are any of the datum marked MMC?
Yes Datum B is TP: .06(M) A B(M) C(M) and C is TP: .056(M) A B(M)

• Are the datums being located RFS in the fixture?
Not sure, Still learning this stuff. Just been reading stuff online.

#### Proud Liberal

##### Quite Involved in Discussions
Can you post a drawing?

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