The Ring,wearing, cataloged under National Stock Number 4320-01-384-8981, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Alfa Laval Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-384-8981 |
| Primary Part Number | 53716101 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Alfa Laval Inc |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES ALL SURFACES |
| Flange Diameter | 88.0 MILLIMETERS NOMINAL MM |
| Corner Shape | SQUARE ALL CORNERS |
| Body Style | EXTERNAL FLANGE |
| Body Outside Diameter | 50.0 MILLIMETERS NOMINAL MM |
| Unthreaded Mounting Hole Diameter | 0.250 INCHES NOMINAL IN |
| Left Side Flange Thickness | 8.5 MILLIMETERS NOMINAL MM |
| Body Inside Diameter | 45.0 MILLIMETERS NOMINAL MM |
| Bolt Hole Quantity | 3 |
| Bolt Circle Diameter | 76.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 53716101 PRIMARY | Alfa Laval Inc (USA) |
| Reference | Meaning |
|---|---|
| 547040 ITEM 19 | 5/9 Secondary reference Alfa Laval Inc |
NSN 4320-01-384-8981 is a Ring,wearing, manufactured by Alfa Laval Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-384-8981 has 1 manufacturer part number on file: 53716101 (Alfa Laval Inc).
Key specifications for 53716101: Surface Finish: 63.0 MICROINCHES ALL SURFACES; Flange Diameter: 88.0 MILLIMETERS NOMINAL MM; Corner Shape: SQUARE ALL CORNERS; Body Style: EXTERNAL FLANGE. 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.