Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 4S1639-2 with rapid responses always offered by our staff. To ensure that you locate and procure exactly what you need with ease, we list parts with as much information as we can. For example, part number 4S1639-2 It is listed as Panel Power Distribution. component manufactured by Air Conditioning Supply Co Inc, specifically under CAGE Code 02794. It is also accompanied by the NSN 6110014536081 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 6110 Electrical Control Equipment.