The Insulation Pipe Covering,thermal, cataloged under National Stock Number 1660-01-385-5391, 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 Hi-Temp Insulation Inc Dba Hi-Temp Insulation Inc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-385-5391 |
| Primary Part Number | 33M1038-115 |
| Item Name | Insulation Pipe Covering,thermal |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Hi-Temp Insulation Inc Dba Hi-Temp Insulation Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 33M1038-115 PRIMARY | Hi-Temp Insulation Inc Dba Hi-Temp Insulation Inc (USA) |
| Reference | Meaning |
|---|---|
| 304242-15 | 3/2 Design control — primary reference U.S. Government activity |
| 33M1038 | 7/2 Vendor item drawing reference Hi-Temp Insulation Inc Dba Hi-Temp Insulation Inc |
NSN 1660-01-385-5391 is a Insulation Pipe Covering,thermal, manufactured by Hi-Temp Insulation Inc Dba Hi-Temp Insulation Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-385-5391 has 1 manufacturer part number on file: 33M1038-115 (Hi-Temp Insulation Inc Dba Hi-Temp Insulation Inc).
2 possible matches (shared part number, not a government interchangeability claim): 1560-01-385-5820, 1660-01-385-5922. Verify interchangeability with system specifications before substitution.
Key specifications for 33M1038-115: Special Features: C/O; AR -8 COVER, AR -9 INSULATION QUITED, AR -12 COVER, AR -18 INSULATION QUITED, AR -19 CLOTH CERAMIC; End Item Identification: B-1B BOMBER AIRPLANE.. 0 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 1660-01-385-5391 has DEMIL Code D. 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.