PartsTable TECHNICAL DATA SHEET
NSN 4320-01-374-9653Government record, cited

Piston, Pump4320-01-374-9653

NSN 4320-01-374-9653 · NIIN 013749653 · Part number 2474W340
Allied Defense Industries, Llc Dba Ams Distribution · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 0GD25
Government record, cited
NSN 4320-01-374-9653 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-374-9653. Manufacturer of record part number: 2474W340.
Also searched as  4320-01-374-9653 · 4320013749653 · NIIN 013749653 · 01-374-9653 · FSC 4320 Power and Hand Pumps · CAGE 0GD25 · 2474W340
Nearby stock numbers  ·
Features
  • Piston,pump — FSC 4320
  • Integral Connecting Rod: NOT INCLUDED
  • Surface Finish: FINISHED
  • Pin: NOT INCLUDED
  • Oil Groove: NOT INCLUDED
  • Skirt Bottom Cutaway Feature: NOT INCLUDED
  • Finished Size Designation: STANDARD
  • Ring: INCLUDED
Identification
  • NSN: 4320-01-374-9653
  • NIIN: 013749653
  • FSC: 4320 — Power and Hand Pumps
  • FSG: 43 — Pumps and Compressors
  • Primary part number: 2474W340
  • Manufacturer: Allied Defense Industries, Llc Dba Ams Distribution
General Description

The Piston,pump, cataloged under National Stock Number 4320-01-374-9653, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Allied Defense Industries, Llc Dba Ams Distribution. Government technical data includes 9 specifications, 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. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-374-9653
Primary Part Number2474W340
Item NamePiston,pump
FSC / FSG4320 / 43 — Power and Hand Pumps
ManufacturerAllied Defense Industries, Llc Dba Ams Distribution
StatusACTIVE
Integral Connecting RodNOT INCLUDED
Surface FinishFINISHED
PinNOT INCLUDED
Oil GrooveNOT INCLUDED
Skirt Bottom Cutaway FeatureNOT INCLUDED
Finished Size DesignationSTANDARD
RingINCLUDED
Pin Hole BushingNOT INCLUDED
Skirt TypeSOLID
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
2474W340 PRIMARY Allied Defense Industries, Llc Dba Ams Distribution (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 4320-01-374-9653?

NSN 4320-01-374-9653 is a Piston,pump, manufactured by Allied Defense Industries, Llc Dba Ams Distribution, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-374-9653?

NSN 4320-01-374-9653 has 1 manufacturer part number on file: 2474W340 (Allied Defense Industries, Llc Dba Ams Distribution).

What are the specifications of 2474W340?

Key specifications for 2474W340: Integral Connecting Rod: NOT INCLUDED; Surface Finish: FINISHED; Pin: NOT INCLUDED; Oil Groove: NOT INCLUDED. 9 specifications are documented in the U.S. Government catalog.

Is NSN 4320-01-374-9653 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.
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