FORGED FITTINGS , SOCKET WELDING AND THREADED TYPE ASME B16.11
| DN | Nominal Pipe Size | Length (Minimum) A | Plugs Square Head | Plugs Round Head | Hex Plugs and Bushings | ||||
| Height of Square | Width Flats | Nominal Diameter | Length | Width Flats | Hex Height (Min.) | ||||
| (Minimum) | (Minimum) | of Head | (Minimum) | (Nominal) | Bushing | Plug | |||
| B | C | E | D | F | G | H | |||
| 6 | 1/8" | 10 | 6 | 7 | 10 | 35 | 11 | 6 | |
| 8 | 1/4" | 11 | 6 | 10 | 14 | 41 | 16 | 3 | 6 |
| 10 | 3/8" | 13 | 8 | 11 | 18 | 41 | 18 | 4 | 8 |
| 15 | 1/2" | 14 | 10 | 14 | 21 | 44 | 22 | 5 | 8 |
| 20 | 3/4" | 16 | 11 | 16 | 27 | 44 | 27 | 6 | 10 |
| 25 | 1" | 19 | 13 | 21 | 33 | 51 | 36 | 6 | 10 |
| 32 | 1.1/2" | 21 | 14 | 24 | 43 | 51 | 46 | 7 | 14 |
| 40 | 1.1/4" | 21 | 16 | 28 | 48 | 51 | 50 | 8 | 16 |
| 50 | 2" | 22 | 18 | 32 | 60 | 64 | 65 | 9 | 18 |
| 65 | 2.1/2" | 27 | 19 | 36 | 73 | 70 | 75 | 10 | 19 |
| 80 | 3" | 28 | 21 | 41 | 89 | 70 | 90 | 10 | 21 |
| 100 | 4" | 32 | 25 | 65 | 114 | 76 | 115 | 13 | 25 |
GENERAL NOTE: Dimensions are in millimeters.
NOTES:
(1) Cautionary Note Regarding Hex Bushings. Hex Head Bushings of one-size reduction should not be used in services wherein they might be subject to harmful loads and forces other than internal pressures.