The Cover Insulating,coupling, cataloged under National Stock Number 1660-01-050-0018, 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 Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-050-0018 |
| Primary Part Number | 55A009-5 |
| Item Name | Cover Insulating,coupling |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites |
| Status | ACTIVE |
| General Characteristics Item Description | MATL P1000-1 OR EQUIV,4.500 IN. LG,3.500 IN. W,2.500 IN. D,1 HOLE FIRST END 3.120 IN. ID SECOND END 2.750IN. ID,SPLIT LINE ONE SIDE FULL LG OF DEPTH IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 55A009-5 PRIMARY | Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites (USA) |
| 600-215-5 | Burke Industries Purosil Div (USA) |
| 713229-5 | Arrowhead Products Corp (USA) |
| Reference | Meaning |
|---|---|
| 55A009-5 | 5/9 Secondary reference Rsa Engineered Products, Llc Dba Rsa Engineered Products Llc |
| C7888-5 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 1660-01-050-0018 is a Cover Insulating,coupling, manufactured by Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-050-0018 has 3 manufacturer part numbers on file: 55A009-5 (Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites), 600-215-5 (Burke Industries Purosil Div), 713229-5 (Arrowhead Products Corp).
1 possible match (shared part number, not a government interchangeability claim): 1630-01-060-9984. Verify interchangeability with system specifications before substitution.
Key specifications for 55A009-5: General Characteristics Item Description: MATL P1000-1 OR EQUIV,4.500 IN. LG,3.500 IN. W,2.500 IN. D,1 HOLE FIRST END 3.120 IN. ID SECOND END 2.750IN. ID,SPLIT LINE ONE SIDE FULL LG OF DEPTH IN; End Item Identification: ACFT F16. 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.
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.