The Ring Assembly,steam Piston, cataloged under National Stock Number 4320-00-346-6489, 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 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-346-6489 |
| Primary Part Number | 4642P |
| Item Name | Ring Assembly,steam Piston |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF 2 STEEL RINGS AND 1 BRASS RING ASSEMBLED; 8.062 IN. O/A OD; 7.250 IN. O/A ID; 0.375 IN. O/A W; 0.562 IN. O/A H 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 |
|---|---|
| 4642P PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 09455A61 PRIMARY | Kaydon Ring & Seal Inc Dba Skf Precision Technologies (USA) |
| SL4065PC8T0100S PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| AV4S47-018PC8T0100S | 3/2 Design control — primary reference U.S. Government activity |
| AV4S47-017PC8T0100S | 3/2 Design control — primary reference U.S. Government activity |
| 4642P | 5/9 Secondary reference U.S. Government activity |
| SL4065PC8T0100S | 5/9 Secondary reference U.S. Government activity |
NSN 4320-00-346-6489 is a Ring Assembly,steam Piston, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-346-6489 has 3 manufacturer part numbers on file: 4642P (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 09455A61 (Kaydon Ring & Seal Inc Dba Skf Precision Technologies), SL4065PC8T0100S (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 4642P: General Characteristics Item Description: CONSISTS OF 2 STEEL RINGS AND 1 BRASS RING ASSEMBLED; 8.062 IN. O/A OD; 7.250 IN. O/A ID; 0.375 IN. O/A W; 0.562 IN. O/A H IN. 1 specification is 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.