The smallest diameter of the hole is .265 but you have to subtract for the positional tolerance of .0005 for both the pin and hole. This means the pin can't be bigger than .265 - 2(.0005). Hope this made sense.Does anyone knows what does the box with + 0.005 A B C means?I thought the smallest diameter of the hole is 0.265 and the largest is 0.275. apparently not...
Thanks,
Lily
The sign (looks like a plus) is a symbol for positional tolerance. It means the hole can move radially in any direction by .005 Since the hole can move .005 one way and the pin .005 the opposite way (worst case), then you would have to subtract 2*.005 off the pin size.That's very clear on why the diameter of the pin should be 0.265-2*0.005. However, is the sign before the 0.005 a plus? if yes, is it possible to have a minus instead? and what would it mean? Thanks!
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