The Elbow,boss, cataloged under National Stock Number 4730-00-910-3503, 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16 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-910-3503 |
| Item Name | Elbow,boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 GASKET |
| Flow Angle | 90.0 DEGREES |
| FSC Application Data | NONN |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Style | GASKET SEAL (BOSS) FIRST END |
| Connection Type | THREADED INTERNAL BOSS FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Leg Length | 0.468 INCHES NOMINAL FIRST END IN |
| Leg Length | 0.187 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 0.190 INCHES SECOND END IN |
| Nominal Thread Size | 0.190 INCHES FIRST END IN |
| Thread Class | 3A SECOND END A |
| Thread Class | 3B FIRST END |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UNF FIRST END |
| 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 |
|---|---|
| 15002-2 | 3/2 Design control — primary reference U.S. Government activity |
| ST57D74 | 5/9 Secondary reference Lockheed Martin Corp |
| ST57D74-2 | 5/9 Secondary reference Lockheed Martin Corp |
NSN 4730-00-910-3503 is a Elbow,boss, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4810-01-078-9028, 8145-01-583-8190. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-00-910-3503: Furnished Items and Quantity: 1 GASKET; Flow Angle: 90.0 DEGREES; FSC Application Data: NONN; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END. 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.