Part Number: 1421N4BA50 (Hammond m) Part Number: 1421N4BB50 (Call for availability and pricin) Part Number: 1421N4CA50 (Call for availability and pricin) Part Number: 1421N4CB50 (Call for availability and pricin) Part Number: 1421NP100 (Hammond) Part Number: 1421NP1000 (Call for availability and pricin) Part Number: 1421NP25 (Hammond manufacturing) Part Number: 1421NP250 (Call for availability and pricin) Part Number: 14-21P1 (Connector & related) Part Number: 1421PCB1-100 (Call for availability and pricin) Part Number: 1421PCB1-8 (Call for availability and pricin) Part Number: 1421PCB2-100 (Call for availability and pricin) Part Number: 1421PCB2-8 (Pcb standoff .5 8/pk) Part Number: 1421PH-ND (No description)