The Insulation,engine Exhaust, cataloged under National Stock Number 2990-00-446-2995, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-446-2995 |
| Primary Part Number | 10921274 |
| Item Name | Insulation,engine Exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,FOIL,FED QQ-S-766,CLASS 321,0.004 IN. THK AND INSULATION,SILICA FIBER,SPEC AMS3680,0.500 IN. THK,FORMED TOGETHER,IRREGULAR SHAPE,APPROX 10.620 IN. LG,6.425 IN. W,3.500 IN. H,W/4 STRAPS,1 BREATHER IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 2990-00-446-2995 is a Insulation,engine Exhaust, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-446-2995 has 2 manufacturer part numbers on file: BL13905-1 (Johns Manville Intl), 10921274 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 10921274: General Characteristics Item Description: STEEL,FOIL,FED QQ-S-766,CLASS 321,0.004 IN. THK AND INSULATION,SILICA FIBER,SPEC AMS3680,0.500 IN. THK,FORMED TOGETHER,IRREGULAR SHAPE,APPROX 10.620 IN. LG,6.425 IN. W,3.500 IN. H,W/4 STRAPS,1 BREATHER IN; End Item Identification: 2350009376190. 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.