The Flange,mounting,pump, cataloged under National Stock Number 4320-01-437-4766, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-437-4766 |
| Item Name | Flange,mounting,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| Overall Diameter | 9.000 INCHES NOMINAL IN |
| General Characteristics Item Description | 0.750 IN. FLANGE THICKNESS; 5.000 IN. ID; SIX 0.438 IN. DIA HOLES ON 8.000 IN. DIA B.C. IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| B-WK-437-17 | 3/2 Design control — primary reference U.S. Government activity |
| D-WK-492-A71 | 5/9 Secondary reference Walz and Krenzer Inc |
| D-WK-492-A71 ITEM 5-12 | 5/2 Secondary reference U.S. Government activity |
| D-WK-492-A71 | 5/1 Secondary reference U.S. Government activity |
| B-WK-437-17 | 3/9 Design control — primary reference Walz and Krenzer Inc |
| D-WK-492-A71 ITEM 5-12 | 5/9 Secondary reference Walz and Krenzer Inc |
NSN 4320-01-437-4766 is a Flange,mounting,pump, classified under FSC 4320, Power and Hand Pumps. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-440-4030, 4820-01-442-1880. Verify interchangeability with system specifications before substitution.
Key specifications for 4320-01-437-4766: Overall Diameter: 9.000 INCHES NOMINAL IN; General Characteristics Item Description: 0.750 IN. FLANGE THICKNESS; 5.000 IN. ID; SIX 0.438 IN. DIA HOLES ON 8.000 IN. DIA B.C. IN; Special Features: RETAINES PUMP TO BULKHEAD; FOR THRU SHAFT AND SINGLE SHAFT ROTARY PUMPS; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS. 3 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.