The Pump Unit,rotary, cataloged under National Stock Number 4320-01-012-7645, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Layton Manufacturing Co.. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-012-7645 |
| Primary Part Number | 500-065 |
| Item Name | Pump Unit,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Layton Manufacturing Co. |
| Status | ACTIVE |
| Inclosure Type | FULLY INCLOSED |
| Pumping Element Operating Position | HORIZONTAL |
| Voltage in Volts | 12.0 |
| Prime Mover Quantity | 1 |
| Pump Quantity | 1 |
| Prime Mover Cooling Medium | AIR |
| Rotary Pump Design | GEAR |
| Prime Mover Type | ELECTRIC MOTOR |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Mounting Type | BASE |
| 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 |
|---|---|
| 500-065 PRIMARY | Layton Manufacturing Co. (USA) |
| Reference | Meaning |
|---|---|
| M-304 | 5/9 Secondary reference Irwins Yacht Works |
NSN 4320-01-012-7645 is a Pump Unit,rotary, manufactured by Layton Manufacturing Co., classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-012-7645 has 1 manufacturer part number on file: 500-065 (Layton Manufacturing Co.).
4 possible matches (shared part number, not a government interchangeability claim): 5998-01-024-8255, 5962-01-051-2108, 7035-01-143-3536. Verify interchangeability with system specifications before substitution.
Key specifications for 500-065: Inclosure Type: FULLY INCLOSED; Pumping Element Operating Position: HORIZONTAL; Voltage in Volts: 12.0; Prime Mover Quantity: 1. 10 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.