The Adapter,straight,flange to Tube, cataloged under National Stock Number 4730-01-620-3398, 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 Hydraflow. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-620-3398 |
| Primary Part Number | 21F05-16D |
| Item Name | Adapter,straight,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Hydraflow |
| Status | ACTIVE |
| Connection Style | GROOVED CLAMP TO SEGMENT COUPLING TO HOSE FIRST END |
| Connection Type | GROOVED COUPLING FIRST END |
| Material Document and Classification | MS-QQ-A-225/8 ASSN STD SINGLE MATERIAL RESPONSE OR MS-QQ-A-200/8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 300.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nominal Coupling Size Accommodated | 1.000 INCHES FIRST END IN |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| 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 |
|---|---|
| 21F05-16D | Hydraflow (USA) |
| Reference | Meaning |
|---|---|
| JSFF24-16D | 3/2 Design control — primary reference U.S. Government activity |
| JSFF24 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-620-3398 is a Adapter,straight,flange to Tube, manufactured by Hydraflow, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-620-3398 has 1 manufacturer part number on file: 21F05-16D (Hydraflow).
3 possible matches (shared part number, not a government interchangeability claim): 4730-01-620-3402, 4730-01-620-3404, 4730-01-625-4280. Verify interchangeability with system specifications before substitution.
Key specifications for 21F05-16D: Connection Style: GROOVED CLAMP TO SEGMENT COUPLING TO HOSE FIRST END; Connection Type: GROOVED COUPLING FIRST END; Material Document and Classification: MS-QQ-A-225/8 ASSN STD SINGLE MATERIAL RESPONSE OR MS-QQ-A-200/8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Operating Pressure: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 7 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.