The Test Ring, cataloged under National Stock Number 4420-01-034-1683, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Fluid Handling Llc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-034-1683 |
| Primary Part Number | 3-430-5-00-901-10 |
| Item Name | Test Ring |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Fluid Handling Llc |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL; 14.250 IN. OD; 12.875 IN. BOLT CIRCLE; 9.938 IN. ID; 0.750 IN. W; 12 HOLES 0.688 IN. DIA IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3-430-5-00-901-10 PRIMARY | Fluid Handling Llc (USA) |
| Reference | Meaning |
|---|---|
| 3-430-50-00-901 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
| 3-430-5-00-901-10 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
| 3-430-50-00-901 | D/9 Drawing number reference only Fluid Handling Llc |
NSN 4420-01-034-1683 is a Test Ring, manufactured by Fluid Handling Llc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-034-1683 has 1 manufacturer part number on file: 3-430-5-00-901-10 (Fluid Handling Llc).
Key specifications for 3-430-5-00-901-10: General Characteristics Item Description: STEEL; 14.250 IN. OD; 12.875 IN. BOLT CIRCLE; 9.938 IN. ID; 0.750 IN. W; 12 HOLES 0.688 IN. DIA IN. 1 specification is 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.
NSN 4420-01-034-1683 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.