PartsTable TECHNICAL DATA SHEET

NSN 1020-01-223-0089Government record, cited

Guard1020-01-223-0089

NSN 1020-01-223-0089 · NIIN 012230089 · Part number 5526140

Naval Sea Systems Command · FSC 1020 — Guns, Over 125mm Through 150mm · FSG 10 — Weapons · CAGE 53711

Government record, cited

NSN 1020-01-223-0089 — this item is cataloged by the U.S. Government under National Stock Number 1020-01-223-0089. Manufacturer of record part number: 5526140.

Also searched as 1020-01-223-0089 · 1020012230089 · NIIN 012230089 · 01-223-0089 · FSC 1020 Guns, Over 125mm Through 150mm · CAGE 53711 · 5526140

Nearby stock numbers ← 1020-01-223-0053 Plunger · 1020-01-224-4416 Piston →

Features

Guard — FSC 1020
1 manufacturer part number on file
Manufacturer of record: Naval Sea Systems Command

Identification

NSN: 1020-01-223-0089
NIIN: 012230089
FSC: 1020 — Guns, Over 125mm Through 150mm
FSG: 10 — Weapons
Primary part number: 5526140
Manufacturer: Naval Sea Systems Command

General Description

The Guard, cataloged under National Stock Number 1020-01-223-0089, is classified within Federal Supply Class 1020 (Guns, Over 125mm Through 150mm) of the Weapons group. The manufacturer of record is Naval Sea Systems Command. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Guard
FSC / FSG	1020 — Guns, Over 125mm Through 150mm (FSG 10)
Manufacturers	Naval Sea Systems Command (CAGE 53711)

Technical Specifications

Parameter	Value
NSN	1020-01-223-0089
Primary Part Number	5526140
Item Name	Guard
FSC / FSG	1020 / 10 — Guns, Over 125mm Through 150mm
Manufacturer	Naval Sea Systems Command
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL B — Remove Demilitarization Key Points
Hazard	No hazard code in the DLA record (HMIC N)

Cross-Reference Index

Part Number	Manufacturer
5526140 PRIMARY	Naval Sea Systems Command (USA)

No interchangeability data on file.

Other items in FSC 1020 — Guns, Over 125mm Through 150mm

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

1020-00-008-5177

EJECTOR,CARTRIDGE

1020-00-008-5178

EJECTOR,CARTRIDGE

1020-00-008-5179

EJECTOR

1020-00-008-5181

PISTON

1020-00-008-5187

PLUNGER,VALVE

1020-00-008-5188

ACTUATOR,SWITCHETTE

1020-00-008-5188

ACTUATOR,SWITCHETTE

1020-00-008-5190

EJECTOR,CARTRIDGE

Frequently Asked Questions

What is NSN 1020-01-223-0089?

NSN 1020-01-223-0089 is a Guard, manufactured by Naval Sea Systems Command, classified under FSC 1020, Guns, Over 125mm Through 150mm. Status: active.

What part numbers are listed for NSN 1020-01-223-0089?

NSN 1020-01-223-0089 has 1 manufacturer part number on file: 5526140 (Naval Sea Systems Command).

Is NSN 1020-01-223-0089 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.

What is the DEMIL code for NSN 1020-01-223-0089?

NSN 1020-01-223-0089 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.

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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