The Filter Element,fluid, cataloged under National Stock Number 4330-00-001-6310, 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 Watts Regulator Company. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-00-001-6310 |
| Primary Part Number | 137AY77-20 |
| Item Name | Filter Element,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Filtering Media Design | SINTERED SINGLE FILTERING MEDIA RESPONSE |
| Body Diameter | 0.750 INCHES NOMINAL IN |
| Body Overall Length | 1.312 INCHES NOMINAL IN |
| Filtration Rating in Microns | 20.0 NOMINAL |
| Flow Direction | OUTSIDE IN |
| Design Type | REUSABLE |
| Style Designator | CYLINDRICAL W/OUT CONTAINER |
| Body Inside Diameter | 0.500 INCHES NOMINAL IN |
| Material | COPPER ALLOY FILTERING MEDIUM |
| 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 |
|---|---|
| 137AY77-20 PRIMARY | Watts Regulator Company (USA) |
NSN 4330-00-001-6310 is a Filter Element,fluid, manufactured by Watts Regulator Company, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-00-001-6310 has 1 manufacturer part number on file: 137AY77-20 (Watts Regulator Company).
Key specifications for 137AY77-20: Filtering Media Design: SINTERED SINGLE FILTERING MEDIA RESPONSE; Body Diameter: 0.750 INCHES NOMINAL IN; Body Overall Length: 1.312 INCHES NOMINAL IN; Filtration Rating in Microns: 20.0 NOMINAL. 9 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.