The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-550-6121, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Deere & Co. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-550-6121 |
| Primary Part Number | AT181186 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Deere & Co |
| Status | ACTIVE |
| Style Designator | FEMALE COUPLING HALF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AT181186 PRIMARY | Deere & Co (USA) |
| AT181186 | Rdo Equipment Rdo Equipment Pty Ltd (AUS) |
| Reference | Meaning |
|---|---|
| AT181186 | 5/9 Secondary reference Rdo Equipment Pty Ltd |
| AT181186 | 5/9 Secondary reference Hitachi Construction Machinery Aust Australia Pty Ltd Hitachi Construction Machinery |
NSN 4730-01-550-6121 is a Coupling Half,quick Disconnect, manufactured by Deere & Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-550-6121 has 2 manufacturer part numbers on file: AT181186 (Deere & Co), AT181186 (Rdo Equipment Rdo Equipment Pty Ltd).
Key specifications for AT181186: Style Designator: FEMALE COUPLING HALF; Special Features: QTY OF 2; Part Name Assigned by Controlling Agency: COUPLER, MALE; End Item Identification: AXLE COOLER. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.