# NSN 1620-01-040-6929: Valve Assembly Relief, Cylinder, B

NSN 1620-01-040-6929 (also written 1620010406929; NIIN 01-040-6929) is a valve assembly relief, cylinder, b in Federal Supply Class 1620, Aircraft Landing Gear Components. 11 manufacturer part numbers from 11 suppliers are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 1620-01-040-6929 (1620010406929)
- NIIN: 01-040-6929 (010406929)
- Item name: VALVE ASSEMBLY RELIEF,CYLINDER,B
- Federal Supply Class: [FSC 1620 Aircraft Landing Gear Components](https://nsnexplorer.com/fsc/1620/)
- Federal Supply Group: [FSG 16](https://nsnexplorer.com/group/16/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-10-15)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AGAV | END ITEM IDENTIFICATION | ACFT C5A PO MASTER CY P/N 4G14572-101A MAIN LANDING GEAR |
| TEXT | GENERAL CHARACTERISTICS ITEM DESCRIPTION | VALVE BODY 1 P/N 4G14578-101A,INSERT 1 P/N 4G14579-101A,POPPET 1 P/N 4G14580-101A,WASHER 2 P/N 4G14581-101A,SPRING 1 P/N 4G14584-101A,ROLLER 1P/N Q8116,FILTER 1 P/N 25028 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 4G14577-101A | 0MT08 | DEROSA ENGINEERING, INC. DBA DEROSA ENGINEERING INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4G14577-101A | 13002 | GOODRICH CORPORATION DIV ADVANCED STRUCTURES LANDING SYSTEMS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4G14577-101A | 24398 | EAGLE TOOL & MACHINE CO., INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4G14577-101A | 33822 | SPECIAL PROJECTS MFG CO INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4G14577-101A | 36164 | HEROUX-DEVTEK INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4G14577-101A | 55284 | HONEYWELL INTERNATIONAL INC. DBA HONEYWELL DIV AEROSPACE-SOUTH BEND (WESTMOOR ST) | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4G14577-101A | 5ZBP4 | HDI LANDING GEAR USA INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4G14577-101A | 6K4C8 | GOODRICH CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4G14577-101A | 70236 | TACTAIR FLUID CONTROLS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4G14577-101A | 98247 | CANADIAN COMMERCIAL CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4G14577-101A | 98897 | LOCKHEED MARTIN CORP DIV LOCKHEED MARTIN AERONAUTICS COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-14 | [SPE4A725D5243/SPE4A727F0326](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1620010406929) | VALVE ASSEMBLY RELIEF, CYLINDER, BOGIE LAN | DEROSA ENGINEERING, INC. DBA DEROSA ENGINEERING INC | $49,990.20 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=1620010406929&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1620010406929
- 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/1620-01-040-6929/
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