The Expansion Joint,pipe, cataloged under National Stock Number 4730-01-275-4841, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-275-4841 |
| Item Name | Expansion Joint,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Design Type | CORRUGATED ELEMENT |
| Equalization Characteristic | SELF-EQUALIZING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 342-5503321 | 5/1 Secondary reference U.S. Government activity |
| 342-5503631 | 5/1 Secondary reference U.S. Government activity |
| 342-5503333 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-275-4841 is a Expansion Joint,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-275-4842. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-275-4841: Design Type: CORRUGATED ELEMENT; Equalization Characteristic: SELF-EQUALIZING; Overall Length: 24.000 INCHES MAXIMUM IN; Special Features: SIZE 24 INCH IPS; STANDARD ANSI 150 POUND DRILLING; MATERIAL IS CLOTH AND SYNTHETIC RUBBER,WITH BACKING RINGS BOTH ENDS; MINUS 10 DEGREES F TO 110 DEGREES F AT 0 PSIG TO 30 INCH WATER GAP,EQUAL TO MANUFACTURER KOREMA E-3; AXIAL MOVEMENT IS PLUS OR MINUS 1-1/2 INCH; LATERAL MOVEMENT IS PLUS OR MINUS 1-1/2 INCH; FUNCTION - DIESEL ENGINE INTAKE; APPLICABLE TO T-ARC 7 CLASS SHIP LBS. 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.