The Tailpiece,union, cataloged under National Stock Number 4730-01-149-0142, 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 Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-149-0142 |
| Primary Part Number | 513-463935 ITEM F53L1 |
| Item Name | Tailpiece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 513-463935 ITEM F53L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| AII-MTS-09-0269APPXA-F9L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 845-4775990PC18AL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2621-791-05PC18AL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 15-18-0144L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 513-4683935 ITEM F53 | 5/1 Secondary reference U.S. Government activity |
| 845-4775990 PC 1B A | 5/1 Secondary reference U.S. Government activity |
| 15-18-0144 | 3/1 Design control — primary reference U.S. Government activity |
| 845-4775990PC18A | 5/1 Secondary reference U.S. Government activity |
| 2621-791-05PC18A | 5/1 Secondary reference U.S. Government activity |
| 845-4775990 PC 1B A L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| AII-MTS-09-0269APPXA-F9 | 5/1 Secondary reference U.S. Government activity |
NSN 4730-01-149-0142 is a Tailpiece,union, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-149-0142 has 5 manufacturer part numbers on file: 513-463935 ITEM F53L1 (Naval Inventory Control Point Mechanicsburg), AII-MTS-09-0269APPXA-F9L1 (Naval Inventory Control Point Mechanicsburg), 845-4775990PC18AL1 (Naval Inventory Control Point Mechanicsburg), 2621-791-05PC18AL1 (Naval Inventory Control Point Mechanicsburg), 15-18-0144L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 513-463935 ITEM F53L1: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS. 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.