- M type
| Bonnet Type | Connection Type | Connection Size |
| O-Ring Bonnet | Female BSPP Thread | 1/4″ |
| Packing Bonnet | Female BSPT Thread | 3/8″ |
| Female NPT Thread | 1/2″ | |
| Let-Lok® Tube Fitting | ||
| Male to Female - BSPP Thread | ||
| Male to Female - BSPT Thread | ||
| Male to Female - NPT Thread |