The Adapter,air Inlet,heat Exchanger, cataloged under National Stock Number 1660-01-448-7257, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-448-7257 |
| Primary Part Number | KC49175-501 |
| Item Name | Adapter,air Inlet,heat Exchanger |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division |
| Status | ACTIVE |
| Material | RUBBER SYNTHETIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| T-8298 | Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division (USA) |
| KC49175-501 PRIMARY | Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division (USA) |
| KC49175-501 | Kirkhill, Inc. Dba Kirkhill Inc (USA) |
NSN 1660-01-448-7257 is a Adapter,air Inlet,heat Exchanger, manufactured by Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-448-7257 has 3 manufacturer part numbers on file: T-8298 (Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division), KC49175-501 (Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division), KC49175-501 (Kirkhill, Inc. Dba Kirkhill Inc).
Key specifications for KC49175-501: Overall Height: 4.250 INCHES MAXIMUM IN; Overall Length: 19.870 INCHES NOMINAL IN; Overall Width: 16.210 INCHES NOMINAL IN; Material: RUBBER SYNTHETIC. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1660-01-448-7257 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.