The Ring,wearing, cataloged under National Stock Number 4320-00-099-8744, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 12 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-099-8744 |
| Primary Part Number | H4320-699-8744 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Body Style | GROOVED W/EXTERNAL LOCKING FLANGE |
| Distance From End | 0.313 INCHES NOMINAL IN |
| Body Outside Diameter | 5.374 INCHES MINIMUM AND 5.375 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-C-390 D5 FED SPEC SINGLE MATERIAL RESPONSE |
| Groove Depth | 0.188 INCHES NOMINAL IN |
| Distance From End to Groove Center | 0.219 INCHES NOMINAL IN |
| Distance Below Centerline | 0.125 INCHES NOMINAL IN |
| Body Inside Diameter | 4.479 INCHES MINIMUM AND 4.487 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 903 |
| Groove Width | 0.188 INCHES NOMINAL IN |
| Distance Between Groove Centers | 0.609 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 |
|---|---|
| 2-7-89BG | Carver Pump Company (USA) |
| H4320-699-8744 PRIMARY | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 2-7-89BG | 5/9 Secondary reference General Signal Corp |
| 2-7-89BG | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
NSN 4320-00-099-8744 is a Ring,wearing, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-099-8744 has 2 manufacturer part numbers on file: 2-7-89BG (Carver Pump Company), H4320-699-8744 (Naval Inventory Control Point Mechanicsburg).
Key specifications for H4320-699-8744: Corner Shape: SQUARE ALL CORNERS; Body Style: GROOVED W/EXTERNAL LOCKING FLANGE; Distance From End: 0.313 INCHES NOMINAL IN; Body Outside Diameter: 5.374 INCHES MINIMUM AND 5.375 INCHES MAXIMUM IN. 12 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.