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Metric & Inch Flange Bolting Interchangeability
Conventionally, there are two unit systems for bolting: Metric(mm) and Imperial(inch). Both can be employed to the
bolting practice of ASME/ANSI B16.5, EN1092-1 and BS4504 flanges. They are interchangeable as below chart shown,
| IMPERIAL | METRIC |
| 1/2" | M14 |
| 5/8" | M18 |
| 3/4" | M20 |
| 7/8" | M24 |
| 1" | M27 |
| 1-1/8" | M30 |
| 1-1/4" | M33 |
| 1-3/8" | M36 |
| 1-1/2" | M39 |
| 1-5/8" | M42 |
| 1-3/4" | M45 |
| 1-7/8" | M48 |
| 2" | M52 |
| 2-1/4" | M56 |
| 2-1/2" | M64 |
| 2-3/4" | M72 |
Views: 4908 Author:METALS INDUSTRIAL Date:2014/12/29




