The Rotor Assembly,complete, cataloged under National Stock Number 4320-01-031-3786, 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 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-031-3786 |
| Primary Part Number | 396777PH |
| Item Name | Rotor Assembly,complete |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| General Characteristics Item Description | ASSEMBLY CONSISTS OF 1 EA IMPELLER,CRES,PER ASTM A-296,P/N RW-159292,1 EA SHAFT,NICKEL COPPER ALLOY PER QQ-N-281,CLASS A,P/N 964122-1,1 EA KEY,IMPELLER,0.375 IN. SQ BY 4.750 IN. LONG,NICKEL COPPER ALLOY PER QQ-N-281,CLASS A,P/N 37396-76,1 EA KEY,COUPLING,0.312 IN. SQ BY 1.875 IN. LONG,CHRMOLY STEEL PER AISI 4140,P/N 36665-30,2 EA RING,CASING,NICKEL COPPER ALLOY,PER QQ-N-288,CLASS B,COMP B WITH 85000 PSI TENSILE,50000 YIELD,P/N 964125,1 EA FLEXIBLE COUPLING,COMPLETE,COMMERCIAL STEEL,MILL TYPE,FALK T20-70T,DRIVER HALF ROUGH BORED,P/N 964115,2 EA O-RING,0.125 IN. THICK,6000 IN. ID,6.250 IN. OD,BUNA-N PER MIL-P-5516,DUROMETER HARDNESS,70 SHORE A,2 EA SLEEVE,SEAL,NICKEL COPPER ALLOY PER QQ-N-281,CLASS A,P/N 964118,2 EA O-RING,0.125 IN. THICK,1.625 ID,1.875 IN. OD,BUNA-N PER MIL-P-5516,DUROMETER HARDNESS,70 SHORE A,1 EA NUT,SHAFT,LH,NICKEL COPPER ALLOY PER QQ-N-281,CLASS A,P/N 395138-1,4 EA SETSCREW,SOCKET,HEADLESS,0.250-20 THD SIZE,0.250 IN. LONG,NICKEL COPPER ALLOY PER QQ-N-281,I 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 |
|---|---|
| 396777PH PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| RY-166186 | D/9 Drawing number reference only U.S. Government activity |
| RX-166094 | D/9 Drawing number reference only U.S. Government activity |
| 396777PH | 3/9 Design control — primary reference U.S. Government activity |
NSN 4320-01-031-3786 is a Rotor Assembly,complete, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-031-3786 has 1 manufacturer part number on file: 396777PH (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 396777PH: General Characteristics Item Description: ASSEMBLY CONSISTS OF 1 EA IMPELLER,CRES,PER ASTM A-296,P/N RW-159292,1 EA SHAFT,NICKEL COPPER ALLOY PER QQ-N-281,CLASS A,P/N 964122-1,1 EA KEY,IMPELLER,0.375 IN. SQ BY 4.750 IN. LONG,NICKEL COPPER ALLOY PER QQ-N-281,CLASS A,P/N 37396-76,1 EA KEY,COUPLING,0.312 IN. SQ BY 1.875 IN. LONG,CHRMOLY STEEL PER AISI 4140,P/N 36665-30,2 EA RING,CASING,NICKEL COPPER ALLOY,PER QQ-N-288,CLASS B,COMP B WITH 85000 PSI TENSILE,50000 YIELD,P/N 964125,1 EA FLEXIBLE COUPLING,COMPLETE,COMMERCIAL STEEL,MILL TYPE,FALK T20-70T,DRIVER HALF ROUGH BORED,P/N 964115,2 EA O-RING,0.125 IN. THICK,6000 IN. ID,6.250 IN. OD,BUNA-N PER MIL-P-5516,DUROMETER HARDNESS,70 SHORE A,2 EA SLEEVE,SEAL,NICKEL COPPER ALLOY PER QQ-N-281,CLASS A,P/N 964118,2 EA O-RING,0.125 IN. THICK,1.625 ID,1.875 IN. OD,BUNA-N PER MIL-P-5516,DUROMETER HARDNESS,70 SHORE A,1 EA NUT,SHAFT,LH,NICKEL COPPER ALLOY PER QQ-N-281,CLASS A,P/N 395138-1,4 EA SETSCREW,SOCKET,HEADLESS,0.250-20 THD SIZE,0.250 IN. LONG,NICKEL COPPER ALLOY PER QQ-N-281,I 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.