NSN 4320-01-017-9523 · NIIN 010179523 · Part number 646811
Curtiss-Wright Electro-Mechanical Corporation Div Epd · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 0UBG9
Government record, cited
NSN 4320-01-017-9523 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-017-9523. Manufacturer of record part number: 646811.
Also searched as4320-01-017-9523 ·
4320010179523 ·
NIIN 010179523 ·
01-017-9523 ·
FSC 4320 Power and Hand Pumps · CAGE 0UBG9 · 646811
General Characteristics Item Description: NICKEL ALLOY; 0.528 IN. OD; 0.472 IN. ID; 0.348 IN. LG; W/CENTER HOLE 0.343 IN. DIA IN
2 manufacturer part numbers on file
Manufacturer of record: Curtiss-Wright Electro-Mechanical Corporation Div Epd
Identification
NSN: 4320-01-017-9523
NIIN: 010179523
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: 646811
Manufacturer: Curtiss-Wright Electro-Mechanical Corporation Div Epd
General Description
The Locking Cup, cataloged under National Stock Number 4320-01-017-9523, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4320-01-017-9523
Primary Part Number
646811
Item Name
Locking Cup
FSC / FSG
4320 / 43 — Power and Hand Pumps
Manufacturer
Curtiss-Wright Electro-Mechanical Corporation Div Epd
Status
ACTIVE
General Characteristics Item Description
NICKEL ALLOY; 0.528 IN. OD; 0.472 IN. ID; 0.348 IN. LG; W/CENTER HOLE 0.343 IN. DIA IN
Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
No interchangeability data on file.
Other items in FSC 4320 — Power and Hand Pumps
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4320-00-001-1633
4320-00-001-1633 · Item name not on file
4320-00-001-2628
RETAINER AND PIN
4320-00-001-2629
HOUSING AND PIN
4320-00-001-2630
PUMP,CENTRIFUGAL
4320-00-001-2631
4320-00-001-2631 · Item name not on file
4320-00-001-2632
4320-00-001-2632 · Item name not on file
4320-00-001-3377
4320-00-001-3377 · Item name not on file
4320-00-001-3384
4320-00-001-3384 · Item name not on file
Frequently Asked Questions
What is NSN 4320-01-017-9523?
NSN 4320-01-017-9523 is a Locking Cup, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
What part numbers are listed for NSN 4320-01-017-9523?
NSN 4320-01-017-9523 has 2 manufacturer part numbers on file: 646811 (Toolex, Inc Dba Toolex Inc), 646811 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
What are the specifications of 646811?
Key specifications for 646811: General Characteristics Item Description: NICKEL ALLOY; 0.528 IN. OD; 0.472 IN. ID; 0.348 IN. LG; W/CENTER HOLE 0.343 IN. DIA IN; End Item Identification: BYRON JACKSON POWER PUMPS NO. 691N0100 AND 691N0120. 1 specification is documented in the U.S. Government catalog.
Is NSN 4320-01-017-9523 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.