PartsTable TECHNICAL DATA SHEET

NSN 4320-01-441-3685Government record, cited

Parts Kit, Reciprocating Pump4320-01-441-3685

NSN 4320-01-441-3685 · NIIN 014413685 · Part number 57304776

Atlas Copco · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 0CA08

Government record, cited

NSN 4320-01-441-3685 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-441-3685. Manufacturer of record part number: 57304776.

Also searched as 4320-01-441-3685 · 4320014413685 · NIIN 014413685 · 01-441-3685 · FSC 4320 Power and Hand Pumps · CAGE 0CA08 · 57304776 · 855017P0792

Nearby stock numbers ← 4320-01-441-3492 Pump Unit, Centrifugal · 4320-01-441-3704 Pump, Rotary →

Features

Parts Kit,reciprocating Pump — FSC 4320
Component Quantity: 19
End Item Source: 66324
End Item Name: PUMP
Nonsupply Items and Quantities: LINER 1; PISTON 1; PISTON ROD 1; VALVE SPRINGS 4; VALVES 4; VALVE INSERTS 4; VALVE SEATS 4
1 manufacturer part number on file
Manufacturer of record: Atlas Copco

Identification

NSN: 4320-01-441-3685
NIIN: 014413685
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: 57304776
Manufacturer: Atlas Copco

General Description

The Parts Kit,reciprocating Pump, cataloged under National Stock Number 4320-01-441-3685, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Atlas Copco. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4320-01-441-3685
Primary Part Number	57304776
Item Name	Parts Kit,reciprocating Pump
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Atlas Copco
Status	ACTIVE
Component Quantity	19
End Item Source	66324
End Item Name	PUMP
Nonsupply Items and Quantities	LINER 1; PISTON 1; PISTON ROD 1; VALVE SPRINGS 4; VALVES 4; VALVE INSERTS 4; VALVE SEATS 4

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
57304776 PRIMARY	Atlas Copco (USA)

Reference documents

Reference	Meaning
855017P0792	5/9 Secondary reference Atlas Copco

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 4320-01-441-3685?

NSN 4320-01-441-3685 is a Parts Kit,reciprocating Pump, manufactured by Atlas Copco, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-441-3685?

NSN 4320-01-441-3685 has 1 manufacturer part number on file: 57304776 (Atlas Copco).

What are the specifications of 57304776?

Key specifications for 57304776: Component Quantity: 19; End Item Source: 66324; End Item Name: PUMP; Nonsupply Items and Quantities: LINER 1; PISTON 1; PISTON ROD 1; VALVE SPRINGS 4; VALVES 4; VALVE INSERTS 4; VALVE SEATS 4. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4320-01-441-3685 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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