The Ring,wearing, cataloged under National Stock Number 4320-00-417-1376, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Hatch & Kirk, Inc.. Government technical data includes 7 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-417-1376 |
| Primary Part Number | 52639A |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Hatch & Kirk, Inc. |
| Status | ACTIVE |
| Flange Diameter | 10.875 INCHES NOMINAL IN |
| Corner Shape | SQUARE ALL CORNERS |
| Body Style | EXTERNAL FLANGE |
| Body Outside Diameter | 10.500 INCHES NOMINAL IN |
| Left Side Flange Thickness | 0.219 INCHES NOMINAL IN |
| Body Inside Diameter | 9.875 INCHES NOMINAL IN |
| Material | 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 |
|---|---|
| 52639A PRIMARY | Hatch & Kirk, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 26N601PC29 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 52639A | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 26N261PC29 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 26N751PC29 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 26N251PC29 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 26C1020-1 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 26N611PC29 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 26N753PC29 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
NSN 4320-00-417-1376 is a Ring,wearing, manufactured by Hatch & Kirk, Inc., classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-417-1376 has 1 manufacturer part number on file: 52639A (Hatch & Kirk, Inc.).
Key specifications for 52639A: Flange Diameter: 10.875 INCHES NOMINAL IN; Corner Shape: SQUARE ALL CORNERS; Body Style: EXTERNAL FLANGE; Body Outside Diameter: 10.500 INCHES NOMINAL IN. 7 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.