The Elbow,tube to Boss, cataloged under National Stock Number 4730-01-689-3687, 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 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-689-3687 |
| Item Name | Elbow,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Surface Treatment Document and Classification | UNABLE TO DECODE |
| Surface Treatment Document and Classification | ASTM B117 MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| Nominal Length | 1.94 INCHES SECOND END IN |
| Nominal Length | UNABLE TO DECODE1.58 INCHES FIRST ENDUNABLE TO DECODE IN |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Connection Type | THREADED EXTERNAL BOSS SECOND ENDUNABLE TO DECODE |
| Connection Type | UNTHREADED EXTERNAL TUBE FIRST ENDUNABLE TO DECODE |
| Style Designator | ELBOW |
| Material Document and Classification | UNABLE TO DECODE |
| Material Document and Classification | MIL-DTL-18866 MIL STD SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | ZINC OVERALL |
| Surface Treatment | UNABLE TO DECODE |
| Media for Which Designed | UNABLE TO DECODE |
| Media for Which Designed | HYDRAULIC FLUID SINGLE RESPONSE |
| Material | STEEL OVERALL |
| Material | UNABLE TO DECODE |
| 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 |
|---|---|
| MS51839 | 4/1 Identification reference U.S. Government activity |
| MS51839-28Z | 2/2 Government specification standardization U.S. Government activity |
NSN 4730-01-689-3687 is a Elbow,tube to Boss, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-689-3687: Surface Treatment Document and Classification: UNABLE TO DECODE; Surface Treatment Document and Classification: ASTM B117 MIL STD SINGLE TREATMENT RESPONSE OVERALL; Nominal Length: 1.94 INCHES SECOND END IN; Nominal Length: UNABLE TO DECODE1.58 INCHES FIRST ENDUNABLE TO DECODE IN. 16 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.