The Diffuser,air,aircraft Heating an, cataloged under National Stock Number 1660-01-230-4299, 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 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-230-4299 |
| Primary Part Number | L5351381-001 |
| Item Name | Diffuser,air,aircraft Heating an |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division |
| Status | ACTIVE |
| FSC Application Data | EVIRONMENTAL CONTROL SYSTEM |
| General Characteristics Item Description | 19.740 IN. LONG INCLUDING 2.000 IN. AIR INLET PORT; INLET PORT DIA APPROX 2.000 IN. IN |
| 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 |
|---|---|
| L5351381-001 PRIMARY | Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division (USA) |
| L5351381-001 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
| Reference | Meaning |
|---|---|
| L5351381-001 | 5/2 Secondary reference U.S. Government activity |
NSN 1660-01-230-4299 is a Diffuser,air,aircraft Heating an, manufactured by Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-230-4299 has 2 manufacturer part numbers on file: L5351381-001 (Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division), L5351381-001 (The Boeing Company Div Legacy Am&m).
Key specifications for L5351381-001: FSC Application Data: EVIRONMENTAL CONTROL SYSTEM; General Characteristics Item Description: 19.740 IN. LONG INCLUDING 2.000 IN. AIR INLET PORT; INLET PORT DIA APPROX 2.000 IN. IN; End Item Identification: B-1B AIRCRAFT. 2 specifications are 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 1660-01-230-4299 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.