The Cap,tube, cataloged under National Stock Number 4730-01-220-2071, 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 11 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-220-2071 |
| Item Name | Cap,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | PRESSURE SEAL FLARELESS |
| Tube Outside Diameter for Which Designed | 0.250 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZY |
| Style Designator | CAP, TUBE, FLARELESS |
| Thread Direction | RIGHT-HAND INTERNAL |
| Nominal Thread Size | 0.438 INCHES INTERNAL IN |
| Seat Angle | 20.0 DEGREES |
| Thread Class | 2B INTERNAL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF INTERNAL |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| MS51890-3SS(SPCLN) | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 4FNU-SS | 3/1 Design control — primary reference Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| 4302 | 5/1 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| 4FNU-SS | 5/9 Secondary reference U.S. Government activity |
| 4302 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-220-2071 is a Cap,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-220-2071: Connection Style: PRESSURE SEAL FLARELESS; Tube Outside Diameter for Which Designed: 0.250 INCHES NOMINAL IN; Criticality Code Justification: ZZZY; Style Designator: CAP, TUBE, FLARELESS. 11 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.
NSN 4730-01-220-2071 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.
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.