  We report a systematic study on the electronic structure and superconducting
(SC) gaps in electron doped NaFe$_{0.95}$Co$_{0.05}$As superconductor using
angle-resolved photoemission spectroscopy. Hole-like Fermi sheets are at the
zone center and electron-like Fermi sheets are at the zone corner, and are
mainly contributed by $xz$ and $yz$ orbital characters. Our results reveal a
$\frac{\Delta}{K_B T_c}$ in the range of 1.8-2.1, suggesting a weak-coupling
superconductivity in these compounds. Gap closing above the transition
temperature ($T_c$) shows the absence of pseudogaps. Gap evolution with
temperature follow the BCS gap equation near the $\Gamma$, $Z$, and $M$ high
symmetry points. Furthermore, an almost isotropic superconductivity along $k_z$
direction in the momentum space is observed by varying the excitation energies.
