The Retainer Plate,valve, cataloged under National Stock Number 4820-01-133-7426, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Betts Industries, Inc.. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Retainer Plate,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Betts Industries, Inc. (CAGE 13226); Oshkosh Defense Llc (CAGE 75Q65) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-133-7426 |
| Primary Part Number | 3649-AL |
| Item Name | Retainer Plate,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Betts Industries, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| 3649-AL PRIMARY | Betts Industries, Inc. (USA) |
| 2DY842 PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 2DY842 | 5/9 Secondary reference Oshkosh Corp |
| 1505H NO 11 | 5/9 Secondary reference Betts Industries, Inc. |
| 6238-4 PIECE 11 | 5/9 Secondary reference Betts Industries, Inc. |
| 6238-4 | D/9 Drawing number reference only Betts Industries, Inc. |
NSN 4820-01-133-7426 is a Retainer Plate,valve, manufactured by Betts Industries, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-133-7426 has 2 manufacturer part numbers on file: 3649-AL (Betts Industries, Inc.), 2DY842 (Oshkosh Defense Llc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-133-7768, 1005-01-464-1596. Verify interchangeability with system specifications before substitution.
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.