Farnell
CONTACTS SLIP-ON #28 250PCS/REEL - Digikey
CONTACT PKG 250 - Allied Electronics
SLIP-ON CONTACTS ON 28AWG WIRE, PKG 25; Accessory Type:Slip-On Contacts; For Use With:Breadboard & Prototype Boards; Product Range:-; Connector Type:Contact, Crimp; Insulator Colour:Blue; Termination Method:Slip On ;RoHS Compliant: Yes - Newark