The Adapter,straight,tube to Boss, cataloged under National Stock Number 4730-01-686-8493, 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 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-686-8493 |
| Item Name | Adapter,straight,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Nominal Overall Length | 4.000 INCHES IN |
| Connection Type | UNTHREADED EXTERNAL TUBE SECOND END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Style Designator | INSERT AND THREADED EXTERNAL |
| Material Document and Classification | ASTM B138 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Leg Length | 3.376 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| A91461 | D/9 Drawing number reference only U.S. Government activity |
| A91461-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-686-8493 is a Adapter,straight,tube to Boss, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-686-8493: Nominal Overall Length: 4.000 INCHES IN; Connection Type: UNTHREADED EXTERNAL TUBE SECOND END; Connection Type: THREADED EXTERNAL PIPE FIRST END; Style Designator: INSERT AND THREADED EXTERNAL. 8 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.