The Adapter,straight,tube to Boss, cataloged under National Stock Number 4730-01-504-3999, 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 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-504-3999 |
| Item Name | Adapter,straight,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | SWIVEL NUT, GASKET SEAL (PIPE) FIRST END |
| Connection Style | PLAIN (TUBE) SECOND END |
| Nominal Overall Length | 1.570 INCHES IN |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | UNTHREADED INTERNAL TUBE SECOND END |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES SECOND END IN |
| Nominal Thread Size | 0.875 INCHES FIRST END IN |
| Surface Treatment | CADMIUM BODY |
| Media for Which Designed | HYDRAULIC FLUID SINGLE RESPONSE |
| Thread Class | 2A FIRST END A |
| Test Data Document | 96906-51843 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.). |
| Material | STEEL BODY |
| Thread Series Designator | UNF FIRST 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 |
|---|---|
| MIL-DTL-18866 | 4/1 Identification reference U.S. Government activity |
| MS51843-27 | 2/2 Government specification standardization U.S. Government activity |
NSN 4730-01-504-3999 is a Adapter,straight,tube to Boss, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-504-3999: Connection Style: SWIVEL NUT, GASKET SEAL (PIPE) FIRST END; Connection Style: PLAIN (TUBE) SECOND END; Nominal Overall Length: 1.570 INCHES IN; Connection Type: THREADED INTERNAL PIPE FIRST END. 13 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.