The Insulation Blanket,thermal,aircr, cataloged under National Stock Number 1660-01-188-7231, 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 Thermal Structures, Inc. Government technical data includes 20 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-188-7231 |
| Primary Part Number | 68B250052-104 |
| Item Name | Insulation Blanket,thermal,aircr |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Thermal Structures, Inc |
| Status | ACTIVE |
| Quilted Feature | INCLUDED |
| Temp Rating | 850.0 FAHRENHEIT DEGF |
| Layer Environmental Protection | HEAT RESISTANT FIRST LAYER |
| Layer Environmental Protection | HEAT RESISTANT SECOND LAYER |
| Layer Environmental Protection | HEAT RESISTANT THIRD LAYER |
| Length | 62.000 INCHES NOMINAL IN |
| Maximum Thermal Conductivity | NOT REQUIRED |
| Width | 15.500 INCHES NOMINAL IN |
| Affixed Sheet | NOT INCLUDED |
| Material | GLASS FIBER LAYER THIRD LAYER |
| Material | STEEL CORROSION RESISTING LAYER FIRST LAYER |
| Material | STEEL CORROSION RESISTING LAYER SECOND LAYER |
| Layer Quantity | 1 THIRD LAYER |
| Layer Quantity | 1 FIRST LAYER |
| Layer Quantity | 1 SECOND LAYER |
| Added Binder | NOT INCLUDED |
| Thickness | 0.386 INCHES NOMINAL IN |
| Layer Thickness | 0.002 INCHES NOMINAL FIRST LAYER IN |
| Layer Thickness | 0.004 INCHES NOMINAL SECOND LAYER IN |
| Layer Thickness | 0.380 INCHES NOMINAL THIRD LAYER 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 |
|---|---|
| 68B250052-104 | Hi-Temp Insulation Inc Dba Hi-Temp Insulation Inc (USA) |
| 68B250052-104 PRIMARY | Thermal Structures, Inc (USA) |
| Reference | Meaning |
|---|---|
| 68B250052-104 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 68A250324-2006 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 1660-01-188-7231 is a Insulation Blanket,thermal,aircr, manufactured by Thermal Structures, Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-188-7231 has 2 manufacturer part numbers on file: 68B250052-104 (Hi-Temp Insulation Inc Dba Hi-Temp Insulation Inc), 68B250052-104 (Thermal Structures, Inc).
Key specifications for 68B250052-104: Quilted Feature: INCLUDED; Temp Rating: 850.0 FAHRENHEIT DEGF; Layer Environmental Protection: HEAT RESISTANT FIRST LAYER; Layer Environmental Protection: HEAT RESISTANT SECOND LAYER. 20 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 1660-01-188-7231 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.