# NSN 6685-01-551-5331: Gage, Pressure, Dial Indicating

NSN 6685-01-551-5331 (also written 6685015515331; NIIN 01-551-5331) is a gage, pressure, dial indicating in Federal Supply Class 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. 3 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 6685-01-551-5331 (6685015515331)
- NIIN: 01-551-5331 (015515331)
- Item name: GAGE,PRESSURE,DIAL INDICATING
- Federal Supply Class: [FSC 6685 Pressure, Temperature, and Humidity Measuring and Controlling Instruments](https://nsnexplorer.com/fsc/6685/)
- Federal Supply Group: [FSG 66](https://nsnexplorer.com/group/66/)
- Acquisition method suffix code: AMSC L: annual buy value is below the screening threshold. (observed 2026-10-28)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AGAV | END ITEM IDENTIFICATION | CHLORINATOR 7600 ECOLCELL |
| APCM | ACTUATION TYPE | BOURDON TUBE |
| APCS | ADJUSTABILITY | NONADJUSTABLE |
| BHMG | CONNECTION SIZE | 9/16-18 UNF-3A |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | INAVY-GAGE, PRESSURE, DIAL |
| FEAT | SPECIAL FEATURES | 9/16-18 UNF-3A UNION "O" RING TYPE WITH "O" RING, TAIL PIECE AND UNION NUT |
| MATT | MATERIAL | CASE NICKEL ALLOY |
| MATT | MATERIAL | PROTECTIVE CRYSTAL PLASTIC |
| ATEQ | SCALE TYPE | DIAL |
| BGRY | CONNECTION LOCATION | BACK |
| ASST | POINTER TYPE | INDICATING |
| ASSS | POINTER COLOR | RED |
| ARCH | DIAL SIZE | 3-1/2 IN. RD |
| AQFZ | SCALE NAME | PRESSURE |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 3912-G504 | 22501 | HOWELL LABORATORIES INC DBA HOWELL LABORATORIES INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 7800 ITEM 2 | 22501 | HOWELL LABORATORIES INC DBA HOWELL LABORATORIES INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| EA23-3PHP-RWBX | 049X3 | ASHCROFT INC DBA HEISE, WEKSLER | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-27 | [SPE4A626D60EF/SPE4A626F392X](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=6685015515331) | GAGE, PRESSURE, DIAL | MMC METROLOGY LAB, INC. DBA MMC METROLOGY LAB INC | $25,600.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=6685015515331&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=6685015515331
- 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/6685-01-551-5331/
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