PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

P1-7Piston,pump

Star Hydraulics Llc · NSN 4320-00-209-1477 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-209-1477 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-209-1477. Primary manufacturer part number: P1-7.
Features
  • Piston,pump — FSC 4320
  • Surface Treatment: CHROMIUM
  • Material: ALUMINUM ALLOY
  • Reference Number Differentiating Characteristics: MUST BE FREE OF MERCURY CONTAMINATION FOR NUCLEAR PROPULSION PLANT
  • 1 verified cross-reference
  • Primary manufacturer: Star Hydraulics Llc
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Aluminum Alloy construction
General Description

The Piston,pump, cataloged under National Stock Number 4320-00-209-1477, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Star Hydraulics Llc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-209-1477
Primary Part NumberP1-7
Item NamePiston,pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerStar Hydraulics Llc
StatusACTIVE
Surface TreatmentCHROMIUM
MaterialALUMINUM ALLOY
Reference Number Differentiating CharacteristicsMUST BE FREE OF MERCURY CONTAMINATION FOR NUCLEAR PROPULSION PLANT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5977-00-636-399148312 INTERCHANGEABLE
Brush,electrical Contact
Honeywell International Inc. Div Aerospace - Torrance
4330-00-740-2568 INTERCHANGEABLE
Parts Kit,fluid Pressure Filter
4820-00-923-6830 INTERCHANGEABLE
Valve,diaphragm,stop
4210-01-125-3956 INTERCHANGEABLE
Truck,fire Fighting
5930-01-326-6555P17 INTERCHANGEABLE
Switch,toggle
Star Mfg Intl Toastwell
5440-01-656-2424P-17 INTERCHANGEABLE
Ladder,extension
Carbis Ladders Div of Carbis Sales Inc
Cross-Reference Index
Part NumberManufacturer
P1-7 Star Hydraulics Llc (USA)
Related Parts
5977-00-636-3991INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
48312
4330-00-740-2568INTERCHANGEABLE
PARTS KIT,FLUID PRESSURE FILTER
4820-00-923-6830INTERCHANGEABLE
VALVE,DIAPHRAGM,STOP
4210-01-125-3956INTERCHANGEABLE
TRUCK,FIRE FIGHTING
5930-01-326-6555INTERCHANGEABLE
SWITCH,TOGGLE
P17
5440-01-656-2424INTERCHANGEABLE
LADDER,EXTENSION
P-17

Frequently Asked Questions

What is NSN 4320-00-209-1477?

NSN 4320-00-209-1477 is a Piston,pump, manufactured by Star Hydraulics Llc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-209-1477?

NSN 4320-00-209-1477 has 1 cross-referenced part number: P1-7 (Star Hydraulics Llc).

What NSN replaces 4320-00-209-1477?

There are 6 known substitutes for 4320-00-209-1477: 5977-00-636-3991, 4330-00-740-2568, 4820-00-923-6830 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of P1-7?

Key specifications for P1-7: Surface Treatment: CHROMIUM; Material: ALUMINUM ALLOY; Overall Height: 3.562 INCHES NOMINAL IN; Reference Number Differentiating Characteristics: MUST BE FREE OF MERCURY CONTAMINATION FOR NUCLEAR PROPULSION PLANT. 4 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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