| Hardware ANSI Menu | Products and Service Directory
Mechanical Tolerance Standards Charts
Review your design to determine if you have similar application requirements. Should these design guideline be inadequate, reference the charts given within the Hole - Shaft tolerance pages.
General
-
Typical material is 6061-T651, per QQ-A-250/11 or similar aluminum alloy for the base mating components.
-
Dowel Pin - are stainless steel 304, 306, 18-8 etc .. or similar.
-
Application - These fits are for location or alignment applications between two components. Some shear load is acceptable, designer should determine acceptable stress limits for their particular application.
-
These fits are not line-to-line . Fixed fastener calculations will show minimal interference between dowel pins and slip fit holes. Dowel pins should be installed into press fit holes after finishing processes and not removed there after. After the mating components are assembled the first time, one should note assembly orientation for repeat assembly of mating dowel pins. It is optimal to design for one configuration assembly (fool - proof).
See bottom of page for application illustrations.
| Dowel Pin
"D" |
Press Fit Hole |
Slip Fit Hole |
Hole Depth
"MD" MIN. |
Pin Engagement
"E" |
| Ø .031 |
Ø .0305 ± .0005
V Ø .040 MAX. X 90° |
Ø .0320 ± .0005
V Ø .040 MAX. X 90° |
.055 ± .010 |
.025 ± .010 |
| Ø .062 |
Ø .0620 ± .0005
V Ø .080 MAX. X 90° |
Ø .0635 ± .0005
V Ø .080 MAX. X 90° |
.070 ± .010 |
.040 ± .010 |
| Ø .094 |
Ø.0935 ± .0005
V Ø .120 MAX. X 90° |
Ø .0955 ± .0005
V Ø .120 MAX. X 90° |
.095 ± .010 |
.060 ± .015 |
| Ø .125 |
Ø .1245 ± .0005
V Ø .160 MAX. X 90° |
Ø .1265± .0005
V Ø .160 MAX. X 90° |
.110 ± .010 |
.075 ± .015 |
| Ø .187 |
Ø .1870 ± .0005
V Ø .240 MAX. X 90° |
Ø .1895 ± .0005
V Ø .240 MAX. X 90° |
.145 ± .010 |
.110 ± .015 |
| Ø.250 |
Ø .2495 ± .0005
V Ø .315 MAX. X 90° |
Ø .2520 ± .0005
V Ø .315 MAX. X 90° |
.175 ± .010 |
.140 ± .015 |
These illustrations are toleranced per ASME Y14.5M - 1994
Dowel Pin
Slip Fit Hole
© Copyright 2000 - 2009, by Engineers Edge, LLC All rights reserved.
Disclaimer
|
