The Ring,wearing, cataloged under National Stock Number 4320-00-754-4094, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Carver Pump Company. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-754-4094 |
| Primary Part Number | A2 1-2NC180B1US |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Carver Pump Company |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Body Style | GROOVED W/EXTERNAL LOCKING FLANGE |
| Distance From End | 0.312 INCHES NOMINAL IN |
| Body Outside Diameter | 5.250 INCHES NOMINAL IN |
| Groove Depth | 0.156 INCHES NOMINAL IN |
| Distance From End to Groove Center | 0.245 INCHES NOMINAL IN |
| Distance Below Centerline | 0.094 INCHES NOMINAL IN |
| Body Inside Diameter | 4.680 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| Groove Width | 0.250 INCHES NOMINAL IN |
| Distance Between Groove Centers | 0.453 INCHES NOMINAL IN |
| 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 |
|---|---|
| A2 1-2NC180B1US PRIMARY | Carver Pump Company (USA) |
| Reference | Meaning |
|---|---|
| CS4320-0300 | 5/9 Secondary reference Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
NSN 4320-00-754-4094 is a Ring,wearing, manufactured by Carver Pump Company, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-754-4094 has 1 manufacturer part number on file: A2 1-2NC180B1US (Carver Pump Company).
Key specifications for A2 1-2NC180B1US: Corner Shape: SQUARE ALL CORNERS; Body Style: GROOVED W/EXTERNAL LOCKING FLANGE; Distance From End: 0.312 INCHES NOMINAL IN; Body Outside Diameter: 5.250 INCHES NOMINAL IN. 11 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.