# NSN 4320-01-439-4495: Ring, Wearing

NSN 4320-01-439-4495 (also written 4320014394495; NIIN 01-439-4495) is a ring, wearing in Federal Supply Class 4320, Power and Hand Pumps. 6 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 4320-01-439-4495 (4320014394495)
- NIIN: 01-439-4495 (014394495)
- Item name: RING,WEARING
- Federal Supply Class: [FSC 4320 Power and Hand Pumps](https://nsnexplorer.com/fsc/4320/)
- Federal Supply Group: [FSG 43](https://nsnexplorer.com/group/43/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAQL | BODY STYLE | — |
| ABHP | OVERALL LENGTH | INCHES NOMINAL 0.880 |
| ADAR | BODY OUTSIDE DIAMETER | INCHES NOMINAL 8.124 |
| ADAS | BODY INSIDE DIAMETER | INCHES NOMINAL 7.665 |
| ADNU | CORNER RADIUS | OUTSIDE RIGHT CORNER INCHES NOMINAL 0.120 |
| ADNU | CORNER RADIUS | INSIDE RIGHT CORNER INCHES NOMINAL 0.120 |
| AGAV | END ITEM IDENTIFICATION | W/S CODE JDN, ARLEIGH BURKE CLASS DDG |
| AJFM | END TO FLANGE DISTANCE | INCHES NOMINAL 0.300 |
| AYRE | INTERNAL FLANGE INSIDE DIAMETER | INCHES NOMINAL 7.130 |
| AYRG | INTERNAL FLANGE WIDTH | INCHES NOMINAL 0.380 |
| AYRJ | CENTER FLANGE THICKNESS | INCHES NOMINAL 0.235 |
| AYRK | SMALLEST EXTERNAL ANCHOR FLANGE RADIUS | INCHES NOMINAL 4.180 |
| AYRL | LARGEST EXTERNAL ANCHOR FLANGE RADIUS | INCHES NOMINAL 4.430 |
| AYRM | DISTANCE BELOW CENTERLINE | INCHES NOMINAL 0.440 |
| BZLX | CORNER SHAPE | INSIDE RIGHT CORNER ROUND |
| BZLX | CORNER SHAPE | OUTSIDE RIGHT CORNER ROUND |
| BZLX | CORNER SHAPE | OUTSIDE LEFT CORNER SQUARE |
| BZLX | CORNER SHAPE | INSIDE LEFT CORNER SQUARE |
| FEAT | SPECIAL FEATURES | MATERIAL IS SIMSITE GRADE 302 PHENOLIC LAMINATE |
| MATT | MATERIAL | PLASTIC PHENOLIC |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL STD SINGLE MATERIAL RESPONSE NAVSEA DWG 803-7226047 SI-SITE GR 302 |
| PRPY | PROPRIETARY CHARACTERISTICS | PACS |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 0654C0546S901A | 63857 | CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 0654C0546S902A | 63857 | CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 654C0546 | 63857 | CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| NA1516 | 83130 | AIR & LIQUID SYSTEMS CORPORATION DBA BUFFALO PUMPS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| NA1516-2 | 83130 | AIR & LIQUID SYSTEMS CORPORATION DBA BUFFALO PUMPS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| NA6080D-1 PIECE 9 | 83130 | AIR & LIQUID SYSTEMS CORPORATION DBA BUFFALO PUMPS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-23 | [SPE7M126PA429](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4320014394495) | RING, WEARING | CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS | $275,035.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4320014394495&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4320014394495
- 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/4320-01-439-4495/
JSON: https://nsnexplorer.com/api/nsn/4320-01-439-4495.json