TE Connectivity FASTON 250 Series Piggyback Crimp Terminals FASTON 250 series piggyback crimp receptacle tab combination terminals designed for quick and efficient connection and reliability. These FASTON 250 piggyback receptacle terminals have a step down insulation support barrel to compensate for insulation thickness enabling the axial alignment of conductor strands to be maintained. Tapering walls at the rear of these FASTON 250 piggyback receptacle crimp terminals prevent over insertion of shoulderless tabs. The "F" style crimp terminations of these FASTON 250 series quick connect piggyback receptacle tab combinations enable stable electrical and mechanical performance as well as resistance to vibration and corrosion.