RG303 have similar dimensions as RG58, LMR195 coaxial cable, so we provide same N jack (PN#C28CG38058A11) for RG303, LMR195 and RG58 coax cable. This N connector can be terminated with RG303 coax cable by crimp be N pigtail.
Please link N connector jack straight 4 holes panel mount crimp for RG58 coax cable to get drawing of C28CG38058A11 for RG303, RG58 coaxial cable.