# NSN 4730-01-543-0008: Nut, Tube Coupling

NSN 4730-01-543-0008 (also written 4730015430008; NIIN 01-543-0008) is a nut, tube coupling in Federal Supply Class 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. 8 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 4730-01-543-0008 (4730015430008)
- NIIN: 01-543-0008 (015430008)
- Item name: NUT,TUBE COUPLING
- Federal Supply Class: [FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings](https://nsnexplorer.com/fsc/4730/)
- Federal Supply Group: [FSG 47](https://nsnexplorer.com/group/47/)
- Acquisition method suffix code: AMSC T: handled under qualified products list procedures. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| ACTA | NUT STYLE | — |
| ADEA | NUT HEIGHT | INCHES MINIMUM 0.970 AND INCHES MAXIMUM 0.990 |
| ASDB | WIDTH ACROSS FLATS | INCHES NOMINAL 1.000 |
| BRQL | LENGTH TO SHOULDER | INCHES MINIMUM 0.677 AND INCHES MAXIMUM 0.697 |
| BSPX | SMALLEST INSIDE DIAMETER | INCHES MINIMUM 0.690 AND INCHES MAXIMUM 0.695 |
| BZRR | THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| CMLP | THREAD QUANTITY PER INCH | 14 |
| CQJX | NOMINAL THREAD SIZE | INCHES 0.875 |
| CQRJ | NOMINAL TUBE OUTSIDE DIAMETER | INCHES 0.625 |
| CRRB | SEAT ANGLE | DEGREES NOMINAL 45.00 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT, SLEEVE COUPLING, FLARELESS |
| FEAT | SPECIAL FEATURES | CORROSION RESISTANT STEEL (15-5) WITH CADMIUM PLATING |
| MATT | MATERIAL | OVERALL STEEL CORROSION RESISTING |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM |
| ZZZK | SPECIFICATION/STANDARD DATA | PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD 81343 - AS21921 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| AS18280 | 0U583 | SAE INTERNATIONAL DBA SAE INTERNATIONAL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AS18280 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AS21921 | 0U583 | SAE INTERNATIONAL DBA SAE INTERNATIONAL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| AS21921 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MS21921V10P | 0U583 | SAE INTERNATIONAL DBA SAE INTERNATIONAL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MS21921V10P | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| SAE-AS18280 | 0U583 | SAE INTERNATIONAL DBA SAE INTERNATIONAL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| SAE-AS21921 | 0U583 | SAE INTERNATIONAL DBA SAE INTERNATIONAL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-28 | [SPE7M426P4771](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730015430008) | NUT, TUBE COUPLING | — | $5,668.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4730015430008&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4730015430008
- 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/4730-01-543-0008/
JSON: https://nsnexplorer.com/api/nsn/4730-01-543-0008.json