The Expansion Joint,pipe, cataloged under National Stock Number 4730-01-304-5630, 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 8 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-304-5630 |
| Primary Part Number | 20984 |
| Item Name | Expansion Joint,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 |
| Design Type | CORRUGATED ELEMENT |
| Equalization Characteristic | SELF-EQUALIZING |
| End Connection Type | FLANGED |
| Bolt Hole Diameter | 13.0 MILLIMETERS NOMINAL MM |
| Bolt Hole Quantity | 6 |
| Bolt Circle Diameter | 145.0 MILLIMETERS NOMINAL MM |
| Material | STEEL FLANGE |
| Joint Type | SINGLE |
| 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 |
|---|---|
| 20984 PRIMARY | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| M16339 | Teddington Engineered Solutions Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 20984 | 5/9 Secondary reference Rolls-Royce Marine A/s Dep. Engines-Bergen |
| 20984 | 5/9 Secondary reference Ulstein Bergen A/s |
NSN 4730-01-304-5630 is a Expansion Joint,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 4730-01-304-5630 has 2 manufacturer part numbers on file: 20984 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)), M16339 (Teddington Engineered Solutions Ltd).
Key specifications for 20984: Design Type: CORRUGATED ELEMENT; Equalization Characteristic: SELF-EQUALIZING; End Connection Type: FLANGED; Bolt Hole Diameter: 13.0 MILLIMETERS NOMINAL MM. 8 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.