The Tubing,nonmetallic, cataloged under National Stock Number 4720-01-424-4038, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Carver Pump Company. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-424-4038 |
| Primary Part Number | 640-250C393 |
| Item Name | Tubing,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Carver Pump Company |
| Status | ACTIVE |
| Measuring Method and Length | 25.000 INCHES NOMINAL OVERALL IN |
| Temp Rating | -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Flexibility | FLEXIBLE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.250 INCHES NOMINAL IN |
| Operating Pressure | 750.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Inside Diameter | 0.348 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Material | PLASTIC POLYAMIDE NYLON TUBE |
| 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 |
|---|---|
| 640-250-393 | Mckenna Engineering & Equipment Company, Inc. (USA) |
| 640-250C393 PRIMARY | Carver Pump Company (USA) |
| Reference | Meaning |
|---|---|
| 640-250-393 | 5/9 Secondary reference Carver Pump Company |
| 999-5113-B-01 ITEM 400 | 5/9 Secondary reference Carver Pump Company |
NSN 4720-01-424-4038 is a Tubing,nonmetallic, manufactured by Carver Pump Company, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-424-4038 has 2 manufacturer part numbers on file: 640-250-393 (Mckenna Engineering & Equipment Company, Inc.), 640-250C393 (Carver Pump Company).
Key specifications for 640-250C393: Measuring Method and Length: 25.000 INCHES NOMINAL OVERALL IN; Temp Rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF; Flexibility: FLEXIBLE; Cross-Sectional Shape Style: ROUND. 9 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.