The Tube Assembly,metal, cataloged under National Stock Number 4710-01-428-4433, 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 Caterpillar Inc Div Caterpillar Defense. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4710-01-428-4433 |
| Primary Part Number | 7W1555 |
| Item Name | Tube Assembly,metal |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Seat Angle in Deg | 37.0 SINGLE END |
| Design Form | PREBENT |
| Mating End Quantity | 2 SINGLE END |
| Wall Thickness | 1.65 MILLIMETERS NOMINAL MM |
| Thread Direction | RIGHT-HAND SINGLE END |
| Nominal Thread Size | 1.312 INCHES SINGLE END IN |
| End Connection Style | SWIVEL NUT, FLARE SINGLE END |
| Tube Outside Diameter | 25.4 MILLIMETERS NOMINAL MM |
| Thread Class | 3B SINGLE END |
| Thread Quantity Per Inch | 12 SINGLE END |
| Material | STEEL TUBING |
| Material | STEEL SINGLE END |
| Thread Series Designator | UN SINGLE END |
| 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 |
|---|---|
| 7W1555 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 7W1543 IT9 | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 7W1543 | D/9 Drawing number reference only Caterpillar Inc Div Caterpillar Defense |
NSN 4710-01-428-4433 is a Tube Assembly,metal, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-428-4433 has 2 manufacturer part numbers on file: 7W1555 (Caterpillar Inc Div Caterpillar Defense), 7W1543 IT9 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 7W1555: Seat Angle in Deg: 37.0 SINGLE END; Design Form: PREBENT; Mating End Quantity: 2 SINGLE END; Wall Thickness: 1.65 MILLIMETERS NOMINAL MM. 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.