The Nrp,heat Exchanger, cataloged under National Stock Number 5999-01-615-1676, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Manassas. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-615-1676 |
| Primary Part Number | N135749-2 |
| Item Name | Nrp,heat Exchanger |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Lockheed Martin Corporation Div Rms - Manassas |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | Y |
| Unit of Issue | EA |
| Acquisition advice code | JH |
| Weight | 75.0000 lbs |
| Cube | 9.2685 cu ft |
| Part Number | Manufacturer |
|---|---|
| N135749-2 | Lockheed Martin Corporation Div Rms - Manassas (USA) |
| B1698 | Lockheed Martin Corporation Div Rms - Manassas (USA) |
| N136530 | Lockheed Martin Corporation Div Rms - Manassas (USA) |
| Reference | Meaning |
|---|---|
| B1698 | 3/2 Design control — primary reference U.S. Government activity |
| 79C0932-01 | 5/2 Secondary reference U.S. Government activity |
NSN 5999-01-615-1676 is a Nrp,heat Exchanger, manufactured by Lockheed Martin Corporation Div Rms - Manassas, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-615-1676 has 3 manufacturer part numbers on file: N135749-2 (Lockheed Martin Corporation Div Rms - Manassas), B1698 (Lockheed Martin Corporation Div Rms - Manassas), N136530 (Lockheed Martin Corporation Div Rms - Manassas).
Key specifications for N135749-2: Criticality Code Justification: FEAT; Special Features: A PART, ASSEMBLY, OR SYSTEM IDENTIFIED AS ESSENTIAL TO WEAPON SYSTEM PERFORMANCE OR OPERATION TO PRESERVE LIFE AND SAFETY OF PERSONNEL. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5999-01-615-1676 has DEMIL Code D. 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.