The Tube,metallic, cataloged under National Stock Number 4710-01-421-4629, 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 Armstrong International Inc Dba Armstrong Machine Works. Government technical data includes 4 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4710-01-421-4629 |
| Primary Part Number | 981 INLET TUBE |
| Item Name | Tube,metallic |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Armstrong International Inc Dba Armstrong Machine Works |
| Status | ACTIVE |
| Measuring Method and Length | 2.375 INCHES NOMINAL SPECIFIC IN |
| Diameter | 0.500 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | PLAIN ROUND |
| Material | STEEL |
| 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 |
|---|---|
| 981 INLET TUBE PRIMARY | Armstrong International Inc Dba Armstrong Machine Works (USA) |
NSN 4710-01-421-4629 is a Tube,metallic, manufactured by Armstrong International Inc Dba Armstrong Machine Works, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-421-4629 has 1 manufacturer part number on file: 981 INLET TUBE (Armstrong International Inc Dba Armstrong Machine Works).
Key specifications for 981 INLET TUBE: Measuring Method and Length: 2.375 INCHES NOMINAL SPECIFIC IN; Diameter: 0.500 INCHES NOMINAL IN; Cross-Sectional Shape Style: PLAIN ROUND; End Item Identification: W/S CODE, STRATEGIC SEALIFT CONVERSION SHIPS CLASS. 4 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.