The Casing Ring,suction,us, cataloged under National Stock Number 4320-01-146-3133, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is M.t. Davidson Company. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-146-3133 |
| Primary Part Number | AONI-188M-US |
| Item Name | Casing Ring,suction,us |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | M.t. Davidson Company |
| Status | ACTIVE |
| General Characteristics Item Description | NICKEL COPPER ALLOY |
| 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 |
|---|---|
| GCP-761-PC 11A | M.t. Davidson Company (USA) |
| AONI-188M-US PRIMARY | M.t. Davidson Company (USA) |
| Reference | Meaning |
|---|---|
| GCP-761 | D/9 Drawing number reference only M.t. Davidson Company |
| A0N1-188M-US | 5/9 Secondary reference M.t. Davidson Company |
| GCP-756 | D/9 Drawing number reference only M.t. Davidson Company |
NSN 4320-01-146-3133 is a Casing Ring,suction,us, manufactured by M.t. Davidson Company, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-146-3133 has 2 manufacturer part numbers on file: GCP-761-PC 11A (M.t. Davidson Company), AONI-188M-US (M.t. Davidson Company).
Key specifications for AONI-188M-US: General Characteristics Item Description: NICKEL COPPER ALLOY; End Item Identification: M.T.DAVIDSON COMPANY AONIE CLOSE COUPLED CENTRIFUGAL STANDARD NO.2 HORIZONTAL PUMP. 1 specification is 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.