The Adapter,straight,tube to Boss, cataloged under National Stock Number 4730-01-259-7898, 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 21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-259-7898 |
| Item Name | Adapter,straight,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | SOCKET (TUBE) FIRST END |
| Connection Style | GASKET SEAL (BOSS) SECOND END |
| Union Joint Location | FIRST END |
| Tubing Wall Nominal Thickness for Which Designed | 0.085 INCHES FIRST END IN |
| Nominal Overall Length | 2.000 INCHES IN |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Type | THREADED INTERNAL BOSS SECOND END |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES FIRST END IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.750 INCHES SECOND END IN |
| Maximum Operating Temp | 225.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Surface Treatment | PASSIVATE BODY |
| Surface Treatment | PASSIVATE NUT |
| Surface Treatment | PASSIVATE TAILPIECE |
| Media for Which Designed | FLUID SINGLE RESPONSE |
| Thread Class | 2B SECOND END |
| Material | STEEL COMP 316 BODY |
| Material | RUBBER SYNTHETIC GASKET |
| Material | STEEL COMP 304 NUT |
| Material | STEEL CORROSION RESISTING OR STEEL COMP 316 TAILPIECE |
| Thread Series Designator | UNF SECOND END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| H864-8-8-SS | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-259-7898 is a Adapter,straight,tube to Boss, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-259-7898: Connection Style: SOCKET (TUBE) FIRST END; Connection Style: GASKET SEAL (BOSS) SECOND END; Union Joint Location: FIRST END; Tubing Wall Nominal Thickness for Which Designed: 0.085 INCHES FIRST END IN. 21 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.