The Reducer,pipe, cataloged under National Stock Number 4730-01-305-5791, 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 Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings). Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-305-5791 |
| Primary Part Number | 90413 |
| Item Name | Reducer,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 28.0 MILLIMETERS SECOND END MM |
| Nominal Pipe Size Accommodated | 40.0 MILLIMETERS FIRST END MM |
| Connection Style | SOCKET (PIPE) SECOND END |
| Connection Style | PLAIN (PIPE) FIRST END |
| Nominal Overall Length | 80.0 MILLIMETERS MM |
| Connection Type | UNTHREADED INTERNAL PIPE SECOND END |
| Connection Type | UNTHREADED EXTERNAL PIPE FIRST END |
| Material | STEEL CORROSION RESISTING OVERALL |
| Reducer Type | CONCENTRIC |
| 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 |
|---|---|
| 90413 PRIMARY | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| Reference | Meaning |
|---|---|
| LE181/21 | 5/9 Secondary reference Ulstein Bergen A/s |
| 90413 | 5/9 Secondary reference Ulstein Bergen A/s |
NSN 4730-01-305-5791 is a Reducer,pipe, manufactured by Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings), classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-305-5791 has 1 manufacturer part number on file: 90413 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)).
5 possible matches (shared part number, not a government interchangeability claim): 5315-01-314-1993, 3040-01-358-9117, 4730-01-599-1774. Verify interchangeability with system specifications before substitution.
Key specifications for 90413: Nominal Pipe Size Accommodated: 28.0 MILLIMETERS SECOND END MM; Nominal Pipe Size Accommodated: 40.0 MILLIMETERS FIRST END MM; Connection Style: SOCKET (PIPE) SECOND END; Connection Style: PLAIN (PIPE) FIRST END. 9 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.