The Tailpiece,union, cataloged under National Stock Number 4730-01-437-4252, 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 5 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-437-4252 |
| Item Name | Tailpiece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Nominal Pipe Size Designation | 0.500 INCHES IN |
| End Connection Type | BRAZED |
| Criticality Code Justification | ZZZY |
| Material | COPPER ALLOY 922 |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 803-4384536-22CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 803-7063850-B3X1-4 | 5/2 Secondary reference U.S. Government activity |
| 803-4384536-22 | 5/1 Secondary reference Naval Sea Systems Command |
| 803-4384536-3XXX-22CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 803-4384536-3XXX-22 | 5/1 Secondary reference Naval Sea Systems Command |
| 803-4384536-3XXX-22CP | 3/1 Design control — primary reference Naval Sea Systems Command |
NSN 4730-01-437-4252 is a Tailpiece,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-437-4252: Nominal Pipe Size Designation: 0.500 INCHES IN; End Connection Type: BRAZED; Criticality Code Justification: ZZZY; End Item Identification: SEAWOLF CLASS SSN. 5 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.