Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number A1891-4 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 A1891-4 It is listed as Pilot Tube Spider H. component manufactured by Hartzell Propeller, specifically under CAGE Code 24692. It is also accompanied by the NSN 1610001791185 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 1610 Aircraft Propellers and Components.