The Ring,wearing, cataloged under National Stock Number 4320-00-010-2769, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-010-2769 |
| Primary Part Number | SK-63719 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Corner Shape | ROUND INSIDE RIGHT CORNER |
| Distance Between Flanges | 0.750 INCHES NOMINAL IN |
| Corner Radius | 0.313 INCHES NOMINAL INSIDE RIGHT CORNER IN |
| Body Style | INTERNAL FLANGE W/EXTERNAL LOCKING FLANGE |
| Distance From End | 0.375 INCHES NOMINAL IN |
| Body Outside Diameter | 5.125 INCHES NOMINAL IN |
| End to Flange Distance | 1.000 INCHES NOMINAL IN |
| Internal Flange Inside Diameter | 4.000 INCHES NOMINAL IN |
| Left Side Flange Thickness | 0.250 INCHES NOMINAL IN |
| Distance Below Centerline | 0.156 INCHES NOMINAL IN |
| Body Inside Diameter | 4.563 INCHES NOMINAL IN |
| Right Side Flange Thickness | 0.219 INCHES NOMINAL IN |
| Smallest External Anchor Flange Radius | 2.563 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Internal Flange Width | 0.313 INCHES NOMINAL IN |
| Largest External Anchor Flange Radius | 2.750 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 |
|---|---|
| 190157 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 170450 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| SK-63719 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 10076 PRIMARY | Rps-Fl, Inc. Dba Rps Inc (USA) |
| Reference | Meaning |
|---|---|
| SK-63719 | 5/9 Secondary reference U.S. Government activity |
| 190157 | 5/9 Secondary reference U.S. Government activity |
| 170450 | 5/9 Secondary reference U.S. Government activity |
NSN 4320-00-010-2769 is a Ring,wearing, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-010-2769 has 4 manufacturer part numbers on file: 190157 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 170450 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), SK-63719 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 10076 (Rps-Fl, Inc. Dba Rps Inc).
1 possible match (shared part number, not a government interchangeability claim): 5975-00-608-9014. Verify interchangeability with system specifications before substitution.
Key specifications for SK-63719: Corner Shape: SQUARE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE LEFT CORNER; Corner Shape: SQUARE INSIDE LEFT CORNER; Corner Shape: ROUND INSIDE RIGHT CORNER. 19 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.