The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-673-2211, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Danfoss Inc. Government technical data includes 29 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4820-00-673-2211 |
| Primary Part Number | CAT 186 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Danfoss Inc |
| Status | ACTIVE |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | NOT IDENTICAL |
| Second End Flange Width | 3.312 INCHES NOMINAL IN |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| Third End Relationship with Preceding Ends | IDENTICAL WITH SECOND END |
| First End Style Designator | PLAIN |
| Second End Center to Center Distance Between Holes Along Width | 2.312 INCHES NOMINAL IN |
| Second End Bolt Hole Quantity | 4 |
| Temp Rating | -65.0 FAHRENHEIT MINIMUM AND 125.0 FAHRENHEIT MAXIMUM DEGF |
| Fourth End Connection Type | PLAIN FACE FLANGE |
| Fourth End Center to Center Distance Between Holes Along Length | 2.312 INCHES NOMINAL IN |
| End Connection Quantity | 4 |
| Second End Flange Thickness | 3.370 INCHES NOMINAL IN |
| Fourth End Flange Shape Style | RECTANGULAR W/BOLT HOLES |
| Fourth End Style Designator | PLAIN |
| Second End Center to Center Distance Between Holes Along Length | 1.188 INCHES NOMINAL IN |
| Second End Style Designator | PLAIN |
| Second End Flange Shape Style | RECTANGULAR (INCLUDES SQUARE) W/ BOLT HOLES |
| Fourth End Bolt Hole Diameter | 0.483 INCHES NOMINAL IN |
| First End Connection Type | THREADED INTERNAL PIPE |
| Fourth End Center to Center Distance Between Holes Along Width | 1.188 INCHES NOMINAL IN |
| Fourth End Relationship with Preceding Ends | NOT IDENTICAL WITH FIRST, SECOND OR THIRD END |
| Media for Which Designed | HYDRAULIC OIL |
| Fourth End Bolt Hole Quantity | 4 |
| Maximum Inlet Pressure Rating | ERR-060 |
| Second End Flange Length | 2.880 INCHES NOMINAL IN |
| Second End Connection Type | PLAIN FACE FLANGE |
| Thread Size and Series/type Designator | 1/4-18 NPT FIRST END |
| Filter | NOT INCLUDED |
| 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 |
|---|---|
| 10867008 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| CAT 186 PRIMARY | Danfoss Inc (USA) |
| Reference | Meaning |
|---|---|
| CAT 186 | 5/9 Secondary reference David Brown Hydraulics Inc Dba Hydreco |
| 2590006732211 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 2590006732211 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| CAT 186 | 5/9 Secondary reference Danfoss Fluid Power Inc Racine Opn |
| E2020 | 5/9 Secondary reference General Signal Corp |
| E2020 | 5/9 Secondary reference David Brown Hydraulics Inc Dba Hydreco |
NSN 4820-00-673-2211 is a Valve,regulating,fluid Pressure, manufactured by Danfoss Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-673-2211 has 2 manufacturer part numbers on file: 10867008 (U S Army Tank Automotive Command Amsta-Im-Mm), CAT 186 (Danfoss Inc).
2 possible matches (shared part number, not a government interchangeability claim): 3830-01-102-5440, 8130-01-325-6610. Verify interchangeability with system specifications before substitution.
Key specifications for CAT 186: First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: NOT IDENTICAL; Second End Flange Width: 3.312 INCHES NOMINAL IN; Regulation Type: AUTOMATIC SINGLE STAGE. 29 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.