The Tubing,nonmetallic, cataloged under National Stock Number 4720-01-271-6958, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Saint-Gobain Performance Plastics. Government technical data includes 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-271-6958 |
| Primary Part Number | E-3603 3/8ODX1/4IDX1/16WALL THK |
| Item Name | Tubing,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Saint-Gobain Performance Plastics |
| Status | ACTIVE |
| Measuring Method and Length | 44.000 INCHES NOMINAL OVERALL IN |
| Temp Rating | -58.0 FAHRENHEIT AND 165.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Flexibility | FLEXIBLE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.312 INCHES NOMINAL IN |
| Operating Pressure | 36.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Exterior Color | CLEAR |
| Inside Diameter | 0.250 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Minimum Tensile Strength | 1650 POUNDS PER SQUARE INCH LBS |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Material | PLASTIC TUBE |
| Nonmetallic Hardness Rating | 55.0 NOMINAL SHORE DUROMETER A |
| 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 |
|---|---|
| E-3603 3/8ODX1/4IDX1/16WALL THK PRIMARY | Saint-Gobain Performance Plastics (USA) |
| HS4546-2-0440 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| HS4546 | D/9 Drawing number reference only Mcdonnell Douglas Helicopter Co Inc |
| HS4546-2-0440 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| R-3603 3/8ODX1/4IDX1/16WALL THK | 5/9 Secondary reference Saint-Gobain Performance Plastics |
NSN 4720-01-271-6958 is a Tubing,nonmetallic, manufactured by Saint-Gobain Performance Plastics, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-271-6958 has 2 manufacturer part numbers on file: E-3603 3/8ODX1/4IDX1/16WALL THK (Saint-Gobain Performance Plastics), HS4546-2-0440 (The Boeing Company).
3 possible matches (shared part number, not a government interchangeability claim): 4720-01-399-4235, 4720-01-670-6961, 4720-01-670-6968. Verify interchangeability with system specifications before substitution.
Key specifications for E-3603 3/8ODX1/4IDX1/16WALL THK: Measuring Method and Length: 44.000 INCHES NOMINAL OVERALL IN; Temp Rating: -58.0 FAHRENHEIT AND 165.0 FAHRENHEIT SINGLE RESPONSE DEGF; Flexibility: FLEXIBLE; Cross-Sectional Shape Style: ROUND. 13 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.