The Hose Assembly,metallic, cataloged under National Stock Number 4720-00-320-3304, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Coast Metal Craft, Inc.. Government technical data includes 28 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 4720-00-320-3304 |
| Primary Part Number | 90641 |
| Item Name | Hose Assembly,metallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Coast Metal Craft, Inc. |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES SECOND END |
| Measuring Method and Length | 24.250 INCHES NOMINAL WORKING IN |
| Temp Rating | -54.0 CELSIUS AND 125.0 CELSIUS SINGLE RESPONSE DEGC |
| Minimum Inside Bending Radius | 6.000 INCHES IN |
| Connection Style | SWIVEL NUT FLARE SECOND END |
| Connection Style | SWIVEL NUT FLARE FIRST END |
| End Connection Design | ELBOW SECOND END |
| End Connection Design | STRAIGHT FIRST END |
| Layer Composition and Location | OUTER LAYER BRAIDED CORROSION RESISTANT STEEL WIRE |
| Connection Type | THREADED INTERNAL TUBE SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.562 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.750 INCHES SECOND END IN |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Seat Angle | 37.0 DEGREES SECOND END |
| Exterior Color | NATURAL |
| Inside Diameter | 0.406 INCHES NOMINAL IN |
| Hydrostatic Test Pressure | 150.0 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3B SECOND END |
| Thread Class | 3B FIRST END |
| Outer Covering Environmental Protection | CORROSION RESISTANT |
| Thread Series Designator | UNF FIRST END |
| Thread Series Designator | UNF SECOND END |
| Inner Conveying Tube Style | ANNULAR CLOSE-PITCH CORRUGATED |
| 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 |
|---|---|
| 90641 | C-Tek Industries, Inc Dba C-Tek Industries Inc (USA) |
| 90641 PRIMARY | Coast Metal Craft, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 373263-1 | 7/2 Vendor item drawing reference Raytheon Company Dba Raytheon Co |
| 373263-1 | 5/9 Secondary reference Raytheon Company Div Corp |
| 68473 | 5/9 Secondary reference Senior Flexonics Inc |
| 68473 | 5/2 Secondary reference U.S. Government activity |
NSN 4720-00-320-3304 is a Hose Assembly,metallic, manufactured by Coast Metal Craft, Inc., classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-320-3304 has 2 manufacturer part numbers on file: 90641 (C-Tek Industries, Inc Dba C-Tek Industries Inc), 90641 (Coast Metal Craft, Inc.).
6 possible matches (shared part number, not a government interchangeability claim): 3020-00-399-5804, 1610-00-442-9876, 2810-00-505-9118. Verify interchangeability with system specifications before substitution.
Key specifications for 90641: Flow Angle: 90.0 DEGREES SECOND END; Measuring Method and Length: 24.250 INCHES NOMINAL WORKING IN; Temp Rating: -54.0 CELSIUS AND 125.0 CELSIUS SINGLE RESPONSE DEGC; Minimum Inside Bending Radius: 6.000 INCHES IN. 28 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.