| Pipe Size | 1/2 | 3/4 | 1 | 1-1/4 | 1-1/2 | 2 | 2-1/2 | 3 | 4 |
| Part Number | M-10 | M-20 | M-30 | M-40 | M-50 | M-60 | M-70 | M-80 | M-90 |
| A | 0.840 | 1.050 | 1.315 | 1.660 | 1.900 | 2.375 | 2.875 | 3.500 | 4.500 |
| B | 3.125 | 3.375 | 3.500 | 3.500 | 4.250 | 4.250 | 5.375 | 5.875 | 7.000 |
| C | 0.645 | 0.845 | 1.075 | 1.405 | 1.640 | 2.095 | 2.505 | 3.100 | 4.060 |
Combination nipples or sometimes referred to as king nipples, are an extremely versatile way of transitioning from hose pipe to threads. The
end connections are for fluid service only and should not be used for air service or steam service. The most common connection is MPT but
you can also find them with female NPT (National Pipe Thread), flanged or a blank beveled end for welding. Combination nipples are
sometimes confused with male adapters as they look quite similar, but male adapters are designed for polyethylene pipe.