The Plug,end, cataloged under National Stock Number 4730-00-930-4144, 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 U.s.a. Spares Inc.. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-930-4144 |
| Primary Part Number | 506819-2 |
| Item Name | Plug,end |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | U.s.a. Spares Inc. |
| Status | ACTIVE |
| Criticality Code Justification | ZZZW |
| Departure From Cited Document | PER DRAWING THIS IS A CRITICAL APPLICATION ITEM AND IS PART OF A SYSTEM SUPPORTING THE LAUNCH AND/OR RECOVERY OF AIRCRAFT AND IS ESSENTIAL TO SYSTEM PERFORMANCE OR OPERATION, OR THE PERSERVATION OF LIFE OR SAFETY OF OPERATING PERSONNEL. |
| 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 |
|---|---|
| 506819-2 | U.s.a. Spares Inc. (USA) |
| 506819-2 | York Precision Machining and Hydraulics, Llc (USA) |
| 506819-2 | Billet Industries Inc Dba Billet Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 506819-2 | 5/9 Secondary reference Caci Inc-Federal |
| 506819-2 | 3/2 Design control — primary reference U.S. Government activity |
| 506819-2 | 5/9 Secondary reference Duhadaway Tool & Die Shop Inc |
| 506819-2 | 5/9 Secondary reference D & a Electronics Manufacturing Inc |
NSN 4730-00-930-4144 is a Plug,end, manufactured by U.s.a. Spares Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-930-4144 has 3 manufacturer part numbers on file: 506819-2 (U.s.a. Spares Inc.), 506819-2 (York Precision Machining and Hydraulics, Llc), 506819-2 (Billet Industries Inc Dba Billet Industries Inc).
1 possible match (shared part number, not a government interchangeability claim): 1620-01-325-0569. Verify interchangeability with system specifications before substitution.
Key specifications for 506819-2: Criticality Code Justification: ZZZW; Departure From Cited Document: PER DRAWING THIS IS A CRITICAL APPLICATION ITEM AND IS PART OF A SYSTEM SUPPORTING THE LAUNCH AND/OR RECOVERY OF AIRCRAFT AND IS ESSENTIAL TO SYSTEM PERFORMANCE OR OPERATION, OR THE PERSERVATION OF LIFE OR SAFETY OF OPERATING PERSONNEL.; Part Name Assigned by Controlling Agency: PLUG,END 5 FT. SPEAR WATER BRAKE CYLINDER FT; End Item Identification: C13-1,C13,TC13. 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.