PartsTable TECHNICAL DATA SHEET

NSN 4320-01-615-0637Government record, cited

Piston, Pump4320-01-615-0637

NSN 4320-01-615-0637 · NIIN 016150637 · Part number 629AK00002B

Danfoss Power Solutions II, Llc · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 45X75

Government record, cited

NSN 4320-01-615-0637 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-615-0637. Manufacturer of record part number: 629AK00002B.

Also searched as 4320-01-615-0637 · 4320016150637 · NIIN 016150637 · 01-615-0637 · FSC 4320 Power and Hand Pumps · CAGE 45X75 · 629AK00002B · 3851473 · 629AK00002A · 629AK00002A

Nearby stock numbers ← 4320-01-615-0593 Pump, Rotary · 4320-01-615-0696 Pump, Centrifugal →

Features

Piston,pump — FSC 4320
2 manufacturer part numbers on file
Manufacturer of record: Danfoss Power Solutions II, Llc

Identification

NSN: 4320-01-615-0637
NIIN: 016150637
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: 629AK00002B
Manufacturer: Danfoss Power Solutions II, Llc

General Description

The Piston,pump, cataloged under National Stock Number 4320-01-615-0637, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Danfoss Power Solutions II, Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Piston,pump
FSC / FSG	4320 — Power and Hand Pumps (FSG 43)
Manufacturers	Danfoss Power Solutions II, Llc (CAGE 45X75); Oshkosh Defense Llc (CAGE 75Q65)

Technical Specifications

Parameter	Value
NSN	4320-01-615-0637
Primary Part Number	629AK00002B
Item Name	Piston,pump
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Danfoss Power Solutions II, Llc
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
629AK00002B PRIMARY	Danfoss Power Solutions II, Llc (USA)
3851473	Oshkosh Defense Llc (USA)

Reference documents

Reference	Meaning
629AK00002A	3/9 Design control — primary reference Eaton Corp Hydraulics Div
629AK00002A	5/9 Secondary reference Danfoss Power Solutions II, Llc

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 4320-01-615-0637?

NSN 4320-01-615-0637 is a Piston,pump, manufactured by Danfoss Power Solutions II, Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-615-0637?

NSN 4320-01-615-0637 has 2 manufacturer part numbers on file: 629AK00002B (Danfoss Power Solutions II, Llc), 3851473 (Oshkosh Defense Llc).

Is NSN 4320-01-615-0637 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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