The Retainer,disk,valve, cataloged under National Stock Number 4820-01-210-0408, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 2 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-210-0408 |
| Primary Part Number | 89456 |
| Item Name | Retainer,disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Outside Diameter | 5.125 INCHES NOMINAL IN |
| 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 |
|---|---|
| 5VQE72 PIECE 14 | Ashcroft Inc Dba Heise (USA) |
| 89456 PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| H3299577 PIECE 14 | 5/2 Secondary reference U.S. Government activity |
| H3299577 | D/9 Drawing number reference only U.S. Government activity |
| 89456 | C/1 Advisory reference — outside the item-of-supply concept Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse |
| 5VQE72 | D/9 Drawing number reference only Ashcroft Inc Dba Heise |
NSN 4820-01-210-0408 is a Retainer,disk,valve, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-210-0408 has 2 manufacturer part numbers on file: 5VQE72 PIECE 14 (Ashcroft Inc Dba Heise), 89456 (Ashcroft Inc Dba Heise).
5 possible matches (shared part number, not a government interchangeability claim): 5315-01-210-0409, 5315-01-211-2200, 5342-01-337-3209. Verify interchangeability with system specifications before substitution.
Key specifications for 89456: Outside Diameter: 5.125 INCHES NOMINAL IN; Special Features: 5.000 IN. BOLT CIRCLE; 4 HOLES 0.188 IN.DIA IN; Material: STEEL. 2 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.