| Items |
NPPA 204 NPPA Standard Housings |
NPPA 205 NPPA Standard Housings |
NPPA 206 NPPA Standard Housings |
NPPA 207 NPPA Standard Housings |
NPPA 208 NPPA Standard Housings |
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| H - Dimension | N/A 1 5/16 in33.3 mm | N/A 1 7/16 in36.5 mm | N/A 1 11/16 in42.9 mm | N/A 1 7/8 in47.6 mm | N/A 1 15/16 in49.2 mm | |||||
| A - Dimension | N/A 2 7/8 in73 mm | N/A 3 in76 mm | N/A 4 in102 mm | N/A 4 1/4 in108 mm | N/A 4 5/8 in117 mm | |||||
| E - Dimension | N/A 2 in50.8 mm | N/A 2 in50.8 mm | N/A 3 in76.2 mm | N/A 3.25 in82.6 mm | N/A 3 1/2 in88.9 mm | |||||
| B - Dimension | N/A 1 1/2 in38 mm | N/A 1 1/2 in38 mm | N/A 1 1/2 in38 mm | N/A 1 7/8 in48 mm | N/A 1 7/8 in48 mm | |||||
| W - Dimension | N/A 2 9/16 in65 mm | N/A 2 13/16 in71 mm | N/A 3 3/8 in86 mm | N/A 3 3/4 in95 mm | N/A 3 15/16 in100 mm | |||||
| F - Tapped Holes | N/A 3/8-16 UNC | N/A 3/8-16 UNC | N/A 7/16-14 UNC | N/A 1/2-13 UNC | N/A 1/2-13 UNC | |||||
| D - Min Tap Depth | N/A 1/2 in13 mm | N/A 1/2 in13 mm | N/A 5/8 in16 mm | N/A 3/4 in19 mm | N/A 3/4 in19 mm | |||||
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