The Insulation,exhaust Pipe, cataloged under National Stock Number 2990-01-042-2466, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-042-2466 |
| Primary Part Number | 12260221-2 |
| Item Name | Insulation,exhaust Pipe |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| General Characteristics Item Description | FOIL;-STEEL,CORROSION RESISTANT CLASS 321,SPEC QQ-S-766 0.004 THK; MATL.-INSULATION-SILICA FIBER,SPEC AMS 3680 EXCEPT DENSITY TO BE 8 LBS/FT; SHRINKAGE TO BE 2 1/2 PERCENT MAX,REAR APPLICATION LBS |
| 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 |
|---|---|
| 12260221-2 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 2990-01-042-2466 is a Insulation,exhaust Pipe, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-042-2466 has 1 manufacturer part number on file: 12260221-2 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12260221-2: General Characteristics Item Description: FOIL;-STEEL,CORROSION RESISTANT CLASS 321,SPEC QQ-S-766 0.004 THK; MATL.-INSULATION-SILICA FIBER,SPEC AMS 3680 EXCEPT DENSITY TO BE 8 LBS/FT; SHRINKAGE TO BE 2 1/2 PERCENT MAX,REAR APPLICATION LBS; End Item Identification: 2350004408811. 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.