uxcell 5pcs Big Hole SMA Female Center Nut Bulkhead Crimp RG174 RG316 Connector Item Name : 11 Big Hole SMA RF Coaxial Connector;Model : SMA-KY11;Connector Type : Female Ferquency Range : 0-6GHz;Insulation Resistance : &gt;=5000m;Insulation Voltage : 1000V Contact Resistance : Center Conductor&lt;=3.0;Outer Conductor&lt;=2.0;Connector Durability : 500 Cycles;Thread Diameter : 6mm/ 0.25" Hole Diameter : 3mm/ 0.11";Total Size : 20 x 9mm/ 0.8" x 0.35"(L*Max.D);Material : Metal Alloy w Gold Tone Plated Main Color : Gold Tone;Weight : 17g;Package Content : 5 x SMA RF Connector