The Adapter,straight,flange to Boss, cataloged under National Stock Number 4730-01-481-7061, 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 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-481-7061 |
| Item Name | Adapter,straight,flange to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Shape | HEXAGON WITH HOLES FIRST END |
| Nominal Width Across Flats | 1.390 INCHES FIRST END IN |
| Nominal Width Across Flats | 1.260 INCHES SECOND END IN |
| Surface Treatment Document and Classification | MIL-A-8625 TYPE II, CLASS I MIL SPEC 1ST TREATMENT RESPONSE OR MIL-P-23377 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| Connection Style | GASKET SEAL (BOSS) FIRST END |
| Nominal Overall Length | 1.570 INCHES IN |
| Connection Type | THREADED INTERNAL BOSS FIRST END |
| Material Document and Classification | ASTM B221 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.223 INCHES FIRST END IN |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Bolt Hole Quantity | 2 FIRST END |
| Surface Treatment | ANODIZE AND EPOXY OVERALL |
| Thread Class | 3B FIRST END |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) 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 |
|---|---|
| 120911-1 | 3/2 Design control — primary reference U.S. Government activity |
| 120911 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-481-7061 is a Adapter,straight,flange to Boss, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6620-01-615-5609. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-481-7061: Flange Shape: HEXAGON WITH HOLES FIRST END; Nominal Width Across Flats: 1.390 INCHES FIRST END IN; Nominal Width Across Flats: 1.260 INCHES SECOND END IN; Surface Treatment Document and Classification: MIL-A-8625 TYPE II, CLASS I MIL SPEC 1ST TREATMENT RESPONSE OR MIL-P-23377 MIL SPEC 2ND TREATMENT RESPONSE OVERALL. 15 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.