The Filter Body,fluid, cataloged under National Stock Number 4330-01-189-2174, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneumatic North America Div Pneumatics North America. Government technical data includes 7 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-189-2174 |
| Primary Part Number | BK504SY |
| Item Name | Filter Body,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Parker-Hannifin Corporation Dba Pneumatic North America Div Pneumatics North America |
| Status | ACTIVE |
| Body Outside Diameter | 1.437 INCHES NOMINAL IN |
| Body Height | 2.593 INCHES NOMINAL IN |
| Style Designator | HIGH PRESSURE THREADED BODY |
| Filtering System for Which Designed | FULL FLOW |
| Media for Which Designed | AIR |
| Material | PLASTIC POLYCARBONATE SEDIMENT BOWL |
| Mounting Type | THREADED TOP SIDE |
| 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 |
|---|---|
| BK504SY PRIMARY | Parker-Hannifin Corporation Dba Pneumatic North America Div Pneumatics North America (USA) |
| Reference | Meaning |
|---|---|
| BK 504YS | C/1 Advisory reference — outside the item-of-supply concept Watts Regulator Company |
NSN 4330-01-189-2174 is a Filter Body,fluid, manufactured by Parker-Hannifin Corporation Dba Pneumatic North America Div Pneumatics North America, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-189-2174 has 1 manufacturer part number on file: BK504SY (Parker-Hannifin Corporation Dba Pneumatic North America Div Pneumatics North America).
Key specifications for BK504SY: Body Outside Diameter: 1.437 INCHES NOMINAL IN; Body Height: 2.593 INCHES NOMINAL IN; Style Designator: HIGH PRESSURE THREADED BODY; Filtering System for Which Designed: FULL FLOW. 7 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.