The Heater,coolant,engine, cataloged under National Stock Number 2990-01-491-4950, 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. 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 | 2990-01-491-4950 |
| Primary Part Number | A-A-59686 TYPE 1 |
| Item Name | Heater,coolant,engine |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| 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 |
|---|---|
| 501 0170 5035 | Espar Products Inc (CAN) |
| A-A-59686 TYPE 1 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 2990-01-491-4950 is a Heater,coolant,engine, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-491-4950 has 2 manufacturer part numbers on file: 501 0170 5035 (Espar Products Inc), A-A-59686 TYPE 1 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for A-A-59686 TYPE 1: Special Features: TYPE 1 - 2.2 TO 5.0 KW (7500 TO 17000 BTU PER HR) CAPACITY, WITH ENCLOSED HEATER/WATER PUMP ASSEMBLY; End Item Identification: M113A1/A2 ARMORED PERSONNEL CARRIER,COMBAT VEHICLE,ANTI TANK. 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.
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.