N Male to N Female Precision Adapter, 4 Hole Flange PN: P-NM-NF-303
N Female to N Female Precision Adapter, 4 Hole Flange PN: P-NF-NF-179
N Male to SMA Female Adapter, 4 Hole Flange PN: A-NM-SMAF-023
N Female to SMA Female Adapter, 4 Hole Flange PN: A-NF-SMAF-239