The Insulation,thermal,exhaust, cataloged under National Stock Number 2990-01-022-4503, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-022-4503 |
| Primary Part Number | 12252153 |
| Item Name | Insulation,thermal,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 SPEC QQ-S-766 CLASS 321,SILICA FIBER AMS-3680 AND WIRE SPEC RRW-360,IRREGULAR SHAPE,23.060 IN. LG,6.125 IN. W,0.380 IN. THK,WITH 14 SLOTS,0.250 IN. LG,0.180 IN. W 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 |
|---|---|
| 12252153 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 2990010224503 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 2990-01-022-4503 is a Insulation,thermal,exhaust, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-022-4503 has 1 manufacturer part number on file: 12252153 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12252153: General Characteristics Item Description: STEEL SPEC QQ-S-766 CLASS 321,SILICA FIBER AMS-3680 AND WIRE SPEC RRW-360,IRREGULAR SHAPE,23.060 IN. LG,6.125 IN. W,0.380 IN. THK,WITH 14 SLOTS,0.250 IN. LG,0.180 IN. W IN; End Item Identification: 2350001486548. 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.