The Cover,fluid Filter, cataloged under National Stock Number 4330-01-392-6632, 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 The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-392-6632 |
| Primary Part Number | 1645 ITEM 2 PIECE NO. 2 |
| Item Name | Cover,fluid Filter |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C |
| Status | ACTIVE |
| Flange Thickness | 2.125 INCHES NOMINAL IN |
| Bolt Circle Hole Quantity | 12 |
| First Recess Inside Height | 0.250 INCHES NOMINAL IN |
| Mounting Hole Type and Quantity | 12 PLAIN |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Cross-Sectional Shape Style | CIRCULAR RECESS |
| Outside Diameter | 13.625 INCHES NOMINAL IN |
| Pilot Diameter | 10.1875 INCHES NOMINAL IN |
| Inside Diameter | 8.875 INCHES NOMINAL IN |
| Pilot Height | 0.250 INCHES NOMINAL IN |
| Fluid Filter Element Retainer | NOT INCLUDED |
| Peripheral Shape Style | CIRCULAR |
| Material | COPPER ALLOY |
| Hole Diameter | 1.125 INCHES NOMINAL IN |
| Attachment Method | BOLTED |
| 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 |
|---|---|
| 1645 ITEM 2 PIECE NO. 2 PRIMARY | The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C (USA) |
| Reference | Meaning |
|---|---|
| 1645 ITEM 2 PC. | C/1 Advisory reference — outside the item-of-supply concept Staples & Pfeiffer, Inc. |
| 1645 ITEM 2 PIECE NO. 2 | 5/9 Secondary reference Staples & Pfeiffer, Inc. |
NSN 4330-01-392-6632 is a Cover,fluid Filter, manufactured by The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-392-6632 has 1 manufacturer part number on file: 1645 ITEM 2 PIECE NO. 2 (The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C).
Key specifications for 1645 ITEM 2 PIECE NO. 2: Flange Thickness: 2.125 INCHES NOMINAL IN; Bolt Circle Hole Quantity: 12; First Recess Inside Height: 0.250 INCHES NOMINAL IN; Mounting Hole Type and Quantity: 12 PLAIN. 15 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.