PartsTable TECHNICAL DATA SHEET

NSN 6320-01-478-9351Government record, cited

Coupling, Indicator6320-01-478-9351

NSN 6320-01-478-9351 · NIIN 014789351 · Part number A-9921 TY 1

L3 Technologies, Inc. · FSC 6320 — Shipboard Alarm and Signal Systems · FSG 63 — Alarm, Signal, and Security Detection Systems · CAGE 28199

Government record, cited

NSN 6320-01-478-9351 — this item is cataloged by the U.S. Government under National Stock Number 6320-01-478-9351. Manufacturer of record part number: A-9921 TY 1.

Also searched as 6320-01-478-9351 · 6320014789351 · NIIN 014789351 · 01-478-9351 · FSC 6320 Shipboard Alarm and Signal Systems · CAGE 28199 · A-9921 TY 1 · 10-1514 (MOD-434) PC NO 21

Nearby stock numbers ← 6320-01-478-9349 Indicator-Transmitter, Ship's Con · 6320-01-481-4871 Panel, Alarm, Shipboard →

Features

Coupling,indicator — FSC 6320
1 manufacturer part number on file
Manufacturer of record: L3 Technologies, Inc.

Identification

NSN: 6320-01-478-9351
NIIN: 014789351
FSC: 6320 — Shipboard Alarm and Signal Systems
FSG: 63 — Alarm, Signal, and Security Detection Systems
Primary part number: A-9921 TY 1
Manufacturer: L3 Technologies, Inc.

General Description

The Coupling,indicator, cataloged under National Stock Number 6320-01-478-9351, is classified within Federal Supply Class 6320 (Shipboard Alarm and Signal Systems) of the Alarm, Signal, and Security Detection Systems group. The manufacturer of record is L3 Technologies, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Catalog Facts

Item Name	Coupling,indicator
FSC / FSG	6320 — Shipboard Alarm and Signal Systems (FSG 63)
Manufacturers	L3 Technologies, Inc. (CAGE 28199)

Technical Specifications

Parameter	Value
NSN	6320-01-478-9351
Primary Part Number	A-9921 TY 1
Item Name	Coupling,indicator
FSC / FSG	6320 / 63 — Shipboard Alarm and Signal Systems
Manufacturer	L3 Technologies, Inc.
Status	ACTIVE

Lifecycle & Compliance

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

Cross-Reference Index

Part Number	Manufacturer
A-9921 TY 1 PRIMARY	L3 Technologies, Inc. (USA)

Reference documents

Reference	Meaning
10-1514 (MOD-434) PC NO 21	5/1 Secondary reference L3 Technologies, Inc.

No interchangeability data on file.

Other items in FSC 6320 — Shipboard Alarm and Signal Systems

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

6320-00-004-9155

6320-00-004-9155 · Item name not on file

6320-00-004-9156

6320-00-004-9156 · Item name not on file

6320-00-004-9158

COPY,NEON,STOP

6320-00-007-5409

6320-00-007-5409 · Item name not on file

6320-00-007-5410

6320-00-007-5410 · Item name not on file

6320-00-024-1003

CONTACT AND SPRING

6320-00-024-1004

CONTACT AND SPRING

6320-00-025-9652

6320-00-025-9652 · Item name not on file

Frequently Asked Questions

What is NSN 6320-01-478-9351?

NSN 6320-01-478-9351 is a Coupling,indicator, manufactured by L3 Technologies, Inc., classified under FSC 6320, Shipboard Alarm and Signal Systems. Status: active.

What part numbers are listed for NSN 6320-01-478-9351?

NSN 6320-01-478-9351 has 1 manufacturer part number on file: A-9921 TY 1 (L3 Technologies, Inc.).

Is NSN 6320-01-478-9351 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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