The Tube,metallic, cataloged under National Stock Number 4710-01-137-4340, is classified within Federal Supply Class 4710 (Pipe, Tube and Rigid Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is W.w. Grainger, Inc. Div Government Sales Division. Government technical data includes 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4710-01-137-4340 |
| Primary Part Number | 3P669 |
| Item Name | Tube,metallic |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| Measuring Method and Length | 600.000 INCHES NOMINAL RANDOM IN |
| First End Inside Diameter | 0.190 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Diameter | 0.250 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | PLAIN ROUND |
| Wall Thickness | 0.030 INCHES NOMINAL IN |
| Operating Pressure | 1406.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Second End Relationship with First End | IDENTICAL |
| Features Provided | COILED AND ENDS SEALED FOR REFRIGERATION SERVICE |
| Material | COPPER |
| First End Outside Diameter | 0.250 INCHES NOMINAL IN |
| Construction | SEAMLESS |
| 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 |
|---|---|
| 3P669 | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| Reference | Meaning |
|---|---|
| 653R | 5/9 Secondary reference Halstead Metal Products Inc Div of Halstead Industries Inc |
| D-4050 | 5/9 Secondary reference Mueller Brass Co. |
| D 04050 | 3/9 Design control — primary reference Mueller Industries, Inc. |
NSN 4710-01-137-4340 is a Tube,metallic, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-137-4340 has 1 manufacturer part number on file: 3P669 (W.w. Grainger, Inc. Div Government Sales Division).
1 possible match (shared part number, not a government interchangeability claim): 2920-01-318-1063. Verify interchangeability with system specifications before substitution.
Key specifications for 3P669: Measuring Method and Length: 600.000 INCHES NOMINAL RANDOM IN; First End Inside Diameter: 0.190 INCHES NOMINAL IN; First End Style: PLAIN; Diameter: 0.250 INCHES NOMINAL IN. 12 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.