The Valve,check, cataloged under National Stock Number 4820-00-458-4566, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Saf Industries Llc Dba Saf Industries Llc Div Garkenyon. Government technical data includes 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-458-4566 |
| Primary Part Number | 2BS081 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Saf Industries Llc Dba Saf Industries Llc Div Garkenyon |
| Status | ACTIVE |
| Connection Style | GASKET SEAL (BOSS) ALL ENDS |
| Criticality Code Justification | FEAT |
| Connection Type | THREADED INTERNAL BOSS ALL ENDS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.750 INCHES SECOND END IN |
| Nominal Thread Size | 0.562 INCHES THIRD END IN |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Thread Class | 2B ALL ENDS |
| Material | ALUMINUM ALLOY BODY |
| Thread Series Designator | UNF ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 2BS081 PRIMARY | Saf Industries Llc Dba Saf Industries Llc Div Garkenyon (USA) |
| 13066 | Eaton Aerospace Llc (USA) |
| Reference | Meaning |
|---|---|
| 212-076-008-1 | 3/2 Design control — primary reference U.S. Government activity |
| 212-076-008-001 | 5/2 Secondary reference U.S. Government activity |
| 42C42627 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-458-4566 is a Valve,check, manufactured by Saf Industries Llc Dba Saf Industries Llc Div Garkenyon, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-458-4566 has 2 manufacturer part numbers on file: 2BS081 (Saf Industries Llc Dba Saf Industries Llc Div Garkenyon), 13066 (Eaton Aerospace Llc).
4 possible matches (shared part number, not a government interchangeability claim): 1730-00-689-4346, 4210-01-118-7214, 7510-01-566-1242. Verify interchangeability with system specifications before substitution.
Key specifications for 2BS081: Connection Style: GASKET SEAL (BOSS) ALL ENDS; Criticality Code Justification: FEAT; Connection Type: THREADED INTERNAL BOSS ALL ENDS; Thread Direction: RIGHT-HAND ALL ENDS. 11 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.