# NSN 4520-01-373-0533: Latch, Heater Door

NSN 4520-01-373-0533 (also written 4520013730533; NIIN 01-373-0533) is a latch, heater door in Federal Supply Class 4520, Space and Water Heating Equipment. 3 manufacturer part numbers from 3 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 4520-01-373-0533 (4520013730533)
- NIIN: 01-373-0533 (013730533)
- Item name: LATCH,HEATER DOOR
- Federal Supply Class: [FSC 4520 Space and Water Heating Equipment](https://nsnexplorer.com/fsc/4520/)
- Federal Supply Group: [FSG 45](https://nsnexplorer.com/group/45/)
- Acquisition method suffix code: AMSC G: the government has a complete data package and the rights to use it. (observed 2026-11-04)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AGAV | END ITEM IDENTIFICATION | 4520-01-354-1191 |
| TEXT | GENERAL CHARACTERISTICS ITEM DESCRIPTION | MATERIAL IS 14GA. STEEL SHEET; O/A LG IS 1.5IN.,O/A W IS 0.5IN.; 0.203IN. DIA THRU HOLE 0.31IN. FROM ONE END FOR RIVETING TO HEATER SHELL; OPPOSITE END FITS OVER HEATER DOOR AND HAS A TAB 0.44IN. WIDE PROJECTING 0.38IN. TO GRASP WHEN ROTATING LATCH |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 5-13-4406 | 5M176 | RAN-PAIGE CO INC THE DBA M C GENERAL INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5-13-4406 | 81337 | W1D1 NATICK SOLDIER CENTER DBA US ARMY CCDC SOLDIER CENTER DIV COMBAT CAPABILITIES DEVELOPMENT COMMAND - SOLDIER CENTER | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5-13-4406 | 92878 | HDT EXPEDITIONARY SYSTEMS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-14 | [SPE8E826P1397](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4520013730533) | LATCH, HEATER DOOR | INTERNATIONAL THERMAL RESEARCH LTD DBA ITR | $30.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4520013730533&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4520013730533
- 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/4520-01-373-0533/
JSON: https://nsnexplorer.com/api/nsn/4520-01-373-0533.json