The Ring,wearing, cataloged under National Stock Number 4320-01-506-8326, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is The Gorman-Rupp Company Div Gorman-Rupp. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4320-01-506-8326 |
| Primary Part Number | 540414000 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | The Gorman-Rupp Company Div Gorman-Rupp |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES LEFT FACE |
| Surface Finish | 125.0 MICROINCHES INSIDE |
| Surface Finish | 125.0 MICROINCHES RIGHT FACE |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Corner Shape | ROUND INSIDE RIGHT CORNER |
| Corner Shape | CHAMFERED OUTSIDE RIGHT CORNER |
| Corner Radius | 0.220 INCHES MINIMUM AND 0.280 INCHES MAXIMUM INSIDE RIGHT CORNER IN |
| Chamfer Length | 0.090 INCHES MINIMUM AND 0.150 INCHES MAXIMUM OUTSIDE RIGHT CORNER IN |
| Internal Flange Outside Diameter | 5.590 INCHES MINIMUM AND 5.650 INCHES MAXIMUM IN |
| Body Style | INTERNAL FLANGE |
| Internal Flange Lip Width | 0.250 INCHES NOMINAL IN |
| Body Outside Diameter | 6.753 INCHES MINIMUM AND 6.754 INCHES MAXIMUM IN |
| End to Flange Distance | 0.940 INCHES NOMINAL IN |
| Material Document and Classification | ASTM B584 ASSN STD SINGLE MATERIAL RESPONSE OR SAE J461 ASSN STD SINGLE MATERIAL RESPONSE |
| Internal Flange Inside Diameter | 5.470 INCHES MINIMUM AND 5.530 INCHES MAXIMUM IN |
| Body Inside Diameter | 6.270 INCHES MINIMUM AND 6.272 INCHES MAXIMUM IN |
| Chamfer Angle | 14.0 DEGREES MINIMUM AND 16.0 DEGREES MAXIMUM OUTSIDE RIGHT CORNER |
| Material | COPPER ALLOY 836 |
| Internal Flange Width | 0.410 INCHES MINIMUM AND 0.470 INCHES MAXIMUM 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 |
|---|---|
| 540414000 PRIMARY | The Gorman-Rupp Company Div Gorman-Rupp (USA) |
| Reference | Meaning |
|---|---|
| 93016K4105 | 3/9 Design control — primary reference The Gorman-Rupp Company Div Gorman-Rupp |
NSN 4320-01-506-8326 is a Ring,wearing, manufactured by The Gorman-Rupp Company Div Gorman-Rupp, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-506-8326 has 1 manufacturer part number on file: 540414000 (The Gorman-Rupp Company Div Gorman-Rupp).
Key specifications for 540414000: Surface Finish: 125.0 MICROINCHES LEFT FACE; Surface Finish: 125.0 MICROINCHES INSIDE; Surface Finish: 125.0 MICROINCHES RIGHT FACE; Corner Shape: SQUARE OUTSIDE LEFT CORNER. 20 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.