The Adapter and Flange Assembly, cataloged under National Stock Number 4730-01-561-9557, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Dh Instruments Inc.. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-561-9557 |
| Primary Part Number | 123812-01 |
| Item Name | Adapter and Flange Assembly |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Dh Instruments Inc. |
| Status | ACTIVE |
| Overall Diameter | 36.0 MILLIMETERS NOMINAL MM |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 123812-01 PRIMARY | Dh Instruments Inc. (USA) |
| Reference | Meaning |
|---|---|
| U03812 | D/9 Drawing number reference only Dh Instruments Inc. |
NSN 4730-01-561-9557 is a Adapter and Flange Assembly, manufactured by Dh Instruments Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-561-9557 has 1 manufacturer part number on file: 123812-01 (Dh Instruments Inc.).
Key specifications for 123812-01: Overall Diameter: 36.0 MILLIMETERS NOMINAL MM; Overall Length: 34.0 MILLIMETERS NOMINAL MM; Overall Width: 17.8 MILLIMETERS NOMINAL MM; Special Features: BOLT HOLE CENTER TO CENTER ON FLANGE IS 26MM, FLANGE THICKNESS IS 6MM, FROM BOTTOM TO FLANGE IS 16MM, THROUGH HOLE IS 2.40MM, FLANGE HOLE DIAMETER 7.50MM O.D. BY 3.70MM DEEP AND 4.30MM THRU. MM. 2 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.