PartsTable TECHNICAL DATA SHEET

NSN 4320-01-233-5516Government record, cited

Balance Piston4320-01-233-5516

NSN 4320-01-233-5516 · NIIN 012335516 · Part number S8510H

Circor Pumps North America Llc · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 59180

Government record, cited

NSN 4320-01-233-5516 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-233-5516. Manufacturer of record part number: S8510H.

Also searched as 4320-01-233-5516 · 4320012335516 · NIIN 012335516 · 01-233-5516 · FSC 4320 Power and Hand Pumps · CAGE 59180 · S8510H · SF-10528 GROUP 1 PIECE 014 · SF-10528 GROUP 1 PIECE 014

Nearby stock numbers ← 4320-01-233-5462 Cover Assembly · 4320-01-233-5520 →

Features

Balance Piston — FSC 4320
2 manufacturer part numbers on file
Manufacturer of record: Circor Pumps North America Llc

Identification

NSN: 4320-01-233-5516
NIIN: 012335516
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: S8510H
Manufacturer: Circor Pumps North America Llc

General Description

The Balance Piston, cataloged under National Stock Number 4320-01-233-5516, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Circor Pumps North America 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.

Technical Specifications

Parameter	Value
NSN	4320-01-233-5516
Primary Part Number	S8510H
Item Name	Balance Piston
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Circor Pumps North America 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
SF-10528 GROUP 1 PIECE 014	Circor Pumps North America Llc (USA)
S8510H PRIMARY	Circor Pumps North America Llc (USA)

Reference documents

Reference	Meaning
SF-10528 GROUP 1 PIECE 014	5/9 Secondary reference Siemens Energy, Inc.
S8510H	5/9 Secondary reference Siemens Energy, Inc.

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 4320-01-233-5516?

NSN 4320-01-233-5516 is a Balance Piston, manufactured by Circor Pumps North America Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-233-5516?

NSN 4320-01-233-5516 has 2 manufacturer part numbers on file: SF-10528 GROUP 1 PIECE 014 (Circor Pumps North America Llc), S8510H (Circor Pumps North America Llc).

What are the specifications of S8510H?

Key specifications for S8510H: End Item Identification: PUMP RTY PWR 700/288GPM. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4320-01-233-5516 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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