Keystone - Inserts definition: A keystone module is a standardized snap-in package for mounting a variety of low-voltage electrical jacks or optical connectors into a keys... Keystone - Inserts Product Listing: 286678,292404,119270,106719,286689.Connectors, Interconnects type:Circular Connectors(4568089),Barrel - Audio Connectors(714841),Rectangular Connectors - Headers, Male Pins(577481),Card Edge Connectors - Edgeboard Connectors(554593),D-Sub Connectors(513416) .Keystone - Inserts has 165 pieces of spot stock price information, you can click the "RFQ" button to confirm the inventory and price with the MOST.