The Flange,pipe,swivel Retaining, cataloged under National Stock Number 4730-01-061-4155, 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 Satair A/s. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-061-4155 |
| Primary Part Number | 9644-20C |
| Item Name | Flange,pipe,swivel Retaining |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Satair A/s |
| Status | ACTIVE |
| Face Seating Surface Condition | MACHINED |
| Surface Treatment Document and Classification | MIL-F-27272 MIL SPEC SINGLE TREATMENT RESPONSE |
| Flange Section Style | PLAIN RECESSED FACE |
| Style Designator | SQUARE, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.266 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-763 CL 304 COND A FED SPEC SINGLE MATERIAL RESPONSE |
| Recess Depth | 0.136 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN |
| Recess Diameter | 1.854 INCHES MINIMUM AND 1.859 INCHES MAXIMUM IN |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 1.688 INCHES MINIMUM AND 1.698 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE |
| Flange Width | 2.188 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Thickness | 0.229 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 9644-20C | Satair A/s (DNK) |
| Reference | Meaning |
|---|---|
| 9644-20C | 5/1 Secondary reference Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| MS27077-20C | 2/2 Government specification standardization U.S. Government activity |
NSN 4730-01-061-4155 is a Flange,pipe,swivel Retaining, manufactured by Satair A/s, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-061-4155 has 1 manufacturer part number on file: 9644-20C (Satair A/s).
Key specifications for 9644-20C: Face Seating Surface Condition: MACHINED; Surface Treatment Document and Classification: MIL-F-27272 MIL SPEC SINGLE TREATMENT RESPONSE; Flange Section Style: PLAIN RECESSED FACE; Style Designator: SQUARE, ONE BOLT HOLE CIRCLE. 14 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.