The Hose Assembly,metallic, cataloged under National Stock Number 4720-00-334-8753, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is C-Tek Industries, Inc Dba C-Tek Industries Inc. Government technical data includes 29 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4720-00-334-8753 |
| Primary Part Number | 90638 |
| Item Name | Hose Assembly,metallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | C-Tek Industries, Inc Dba C-Tek Industries Inc |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES SECOND END |
| Measuring Method and Length | 19.750 INCHES NOMINAL WORKING IN |
| Temp Rating | -65.0 FAHRENHEIT AND 125.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Minimum Inside Bending Radius | 2.000 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 | 0.400 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.375 INCHES SECOND END IN |
| Nominal Thread Size | 0.375 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Seat Angle | 37.0 DEGREES SECOND END |
| Exterior Color | NATURAL |
| Inside Diameter | 0.250 INCHES NOMINAL IN |
| Hydrostatic Test Pressure | 150.0 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3B SECOND END |
| Thread Class | 3B FIRST END |
| Burst Test Pressure | 300.0 POUNDS PER SQUARE INCH LBS |
| Outer Covering Environmental Protection | CORROSION RESISTANT |
| Thread Series Designator | UNF FIRST END |
| Thread Series Designator | UNF SECOND END |
| Inner Conveying Tube Style | INTERLOCKED PACKED |
| 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 |
|---|---|
| 90638 PRIMARY | C-Tek Industries, Inc Dba C-Tek Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 90638 | 5/9 Secondary reference Coast Metal Craft, Inc. |
| 66788 | 5/9 Secondary reference Senior Flexonics Inc |
| 373267-1 | 7/2 Vendor item drawing reference Raytheon Company Dba Raytheon Co |
| 373267-1 | 5/9 Secondary reference Raytheon Company Div Corp |
NSN 4720-00-334-8753 is a Hose Assembly,metallic, manufactured by C-Tek Industries, Inc Dba C-Tek Industries Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-334-8753 has 1 manufacturer part number on file: 90638 (C-Tek Industries, Inc Dba C-Tek Industries Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5995-01-186-5933, 5930-01-729-2364. Verify interchangeability with system specifications before substitution.
Key specifications for 90638: Flow Angle: 90.0 DEGREES SECOND END; Measuring Method and Length: 19.750 INCHES NOMINAL WORKING IN; Temp Rating: -65.0 FAHRENHEIT AND 125.0 FAHRENHEIT SINGLE RESPONSE DEGF; Minimum Inside Bending Radius: 2.000 INCHES IN. 29 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.