The Cap,tube, cataloged under National Stock Number 4730-01-436-4220, 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 Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-436-4220 |
| Primary Part Number | 4FNTX-M |
| Item Name | Cap,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| Status | ACTIVE |
| Connection Style | FLARE |
| Tube Outside Diameter for Which Designed | 0.250 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND INTERNAL |
| Nominal Thread Size | 0.438 INCHES INTERNAL IN |
| Thread Class | 2B INTERNAL |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNF INTERNAL |
| 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 |
|---|---|
| 4FNTX-M PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA) |
| 516-5486433 F51 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5486433 | D/9 Drawing number reference only Naval Sea Systems Command |
| 516-5343914 ITEM F-89 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 4730-01-436-4220 is a Cap,tube, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-436-4220 has 2 manufacturer part numbers on file: 4FNTX-M (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division), 516-5486433 F51 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 4220-01-441-5222, 4730-01-644-6259. Verify interchangeability with system specifications before substitution.
Key specifications for 4FNTX-M: Connection Style: FLARE; Tube Outside Diameter for Which Designed: 0.250 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND INTERNAL; Nominal Thread Size: 0.438 INCHES INTERNAL IN. 7 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.