The Tube Assembly,metal, cataloged under National Stock Number 4710-01-428-1688, 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 Perkins Engines Inc. Government technical data includes 7 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 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 | 4710-01-428-1688 |
| Primary Part Number | 4121C031 |
| Item Name | Tube Assembly,metal |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Perkins Engines Inc |
| Status | ACTIVE |
| Design Form | PREBENT |
| Mating End Quantity | 1 SECOND END |
| Mating End Quantity | 1 FIRST END |
| Thread Direction | RIGHT-HAND FIRST END |
| End Connection Style | UNTHREADED EXTERNAL SECOND END |
| End Connection Style | COMPRESSION FIRST END |
| Thread Class | 3A FIRST END A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4710-01-428-1688 is a Tube Assembly,metal, manufactured by Perkins Engines Inc, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-428-1688 has 2 manufacturer part numbers on file: 101-3902 (Caterpillar Inc Div Caterpillar Defense), 4121C031 (Perkins Engines Inc).
1 possible match (shared part number, not a government interchangeability claim): 5845-01-523-4718. Verify interchangeability with system specifications before substitution.
Key specifications for 4121C031: Design Form: PREBENT; Mating End Quantity: 1 SECOND END; Mating End Quantity: 1 FIRST END; Thread Direction: RIGHT-HAND FIRST END. 7 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.