The Body,bearing,matched Set, cataloged under National Stock Number 4320-00-656-0259, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Body,bearing,matched Set |
| FSC / FSG | 4320 — Power and Hand Pumps (FSG 43) |
| Manufacturers | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (CAGE 45934) |
| Parameter | Value |
|---|---|
| NSN | 4320-00-656-0259 |
| Primary Part Number | 901-045 |
| Item Name | Body,bearing,matched Set |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| 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 |
|---|---|
| 901-045 PRIMARY | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 901-045 | 5/9 Secondary reference U.S. Government activity |
| 01-13274 | 5/9 Secondary reference Aero Customs Inc |
| 901-045 | 5/9 Secondary reference Aero Customs Inc |
| 901-045 | 5/9 Secondary reference Donallco Inc |
| 01-13273 | 5/9 Secondary reference Aero Customs Inc |
NSN 4320-00-656-0259 is a Body,bearing,matched Set, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-656-0259 has 1 manufacturer part number on file: 901-045 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
3 possible matches (shared part number, not a government interchangeability claim): 3020-01-096-1689, 5310-01-107-6051, 5310-01-384-9922. Verify interchangeability with system specifications before substitution.
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.