The Coupling,hose, cataloged under National Stock Number 4730-01-574-3997, 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 Atlas Copco Compressors Llc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-574-3997 |
| Primary Part Number | 1638-1843-00 |
| Item Name | Coupling,hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Atlas Copco Compressors Llc |
| Status | ACTIVE |
| Surface Treatment | CADMIUM OVERALL |
| Material | ALUMINUM OVERALL |
| 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 |
|---|---|
| 1638-1843-00 PRIMARY | Atlas Copco Compressors Llc (USA) |
| Reference | Meaning |
|---|---|
| 10683 | 5/9 Secondary reference Bowman Distribution |
| 1310 1365 00 | 5/9 Secondary reference Atlas Copco Compressors Llc |
NSN 4730-01-574-3997 is a Coupling,hose, manufactured by Atlas Copco Compressors Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-574-3997 has 1 manufacturer part number on file: 1638-1843-00 (Atlas Copco Compressors Llc).
Key specifications for 1638-1843-00: Special Features: 3/4 INCH NPT, SURFACE TREATMENT: CADMIUM PLATED IN; Surface Treatment: CADMIUM OVERALL; Part Name Assigned by Controlling Agency: CLAW COUPLER; End Item Identification: LP-90 COMPRESSOR, PN: 186K0000. 2 specifications are 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.