# NSN 2840-01-502-4645: Shield, Heat, Aircraft Gas Turbine

NSN 2840-01-502-4645 (also written 2840015024645; NIIN 01-502-4645) is a shield, heat, aircraft gas turbine in Federal Supply Class 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 2840-01-502-4645 (2840015024645)
- NIIN: 01-502-4645 (015024645)
- Item name: SHIELD,HEAT,AIRCRAFT GAS TURBINE
- Federal Supply Class: [FSC 2840 Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components](https://nsnexplorer.com/fsc/2840/)
- Federal Supply Group: [FSG 28](https://nsnexplorer.com/group/28/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-10-23)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABMK | OVERALL WIDTH | INCHES NOMINAL 14.000 |
| MATT | MATERIAL | OVERALL TITANIUM |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC SINGLE MATERIAL RESPONSE -IL-T-9046 (6AL-4V, COND A) |
| CRTL | CRITICALITY CODE JUSTIFICATION | AGAV |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | (INAVY) SHIELD, HEAT; ALSO KNOWN AS SHIELD, HEAT - TURB ENGINE, AFT FUS |
| CZBJ | ENGINE SECTION LOCATION | TURBINE |
| ABHP | OVERALL LENGTH | INCHES NOMINAL 28.000 |
| ABKW | OVERALL HEIGHT | INCHES NOMINAL 0.040 |
| AGAV | END ITEM IDENTIFICATION | FIGHTER AIRCRAFT-FIRST (F18 E/F) |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 74A340824-2014 | 76301 | THE BOEING COMPANY DIV DEFENSE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 74A340824-2014 | 76823 | NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN IS DIV NORTHROP GRUMMAN AERONAUTICS SYSTEMS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-20 | [SPE4AX24D9408/SPE4AX27F0541](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=2840015024645) | SHIELD, HEAT, AIRCRAF | NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN IS DIV NORTHROP GRUMMAN AERONAUTICS SYSTEMS | $97,043.10 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=2840015024645&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=2840015024645
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/2840-01-502-4645/
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