Heat Sink, Electrical-Electronic5999-01-321-8993

NSN 5999-01-321-8993 · NIIN 013218993 · Part number 138587-5

L3harris Technologies, Inc Div Space & Airborne Systems · FSC 5999 — Miscellaneous Electrical and Electronic Components · FSG 59 — Electrical and Electronic Equipment Components · CAGE 24930

Government record, cited

NSN 5999-01-321-8993 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-321-8993. Manufacturer of record part number: 138587-5.

Also searched as 5999-01-321-8993 · 5999013218993 · NIIN 013218993 · 01-321-8993 · FSC 5999 Miscellaneous Electrical and Electronic Components · CAGE 24930 · 138587-5

Nearby stock numbers ← 5999-01-321-8992 Heat Sink, Electrical-Electronic · 5999-01-321-8994 Heat Sink, Electrical-Electronic →

Features

Heat Sink,electrical-Electronic — FSC 5999
1 manufacturer part number on file
Manufacturer of record: L3harris Technologies, Inc Div Space & Airborne Systems

Identification

NSN: 5999-01-321-8993
NIIN: 013218993
FSC: 5999 — Miscellaneous Electrical and Electronic Components
FSG: 59 — Electrical and Electronic Equipment Components
Primary part number: 138587-5
Manufacturer: L3harris Technologies, Inc Div Space & Airborne Systems

General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-321-8993, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. The manufacturer of record is L3harris Technologies, Inc Div Space & Airborne Systems. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications

Parameter	Value
NSN	5999-01-321-8993
Primary Part Number	138587-5
Item Name	Heat Sink,electrical-Electronic
FSC / FSG	5999 / 59 — Miscellaneous Electrical and Electronic Components
Manufacturer	L3harris Technologies, Inc Div Space & Airborne Systems
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Possible hazard — SDS may be required (DLA HMIC P)
Shelf Life Code	0
Criticality Code	X
Unit of Issue	EA
Acquisition advice code	J

Cross-Reference Index

Part Number	Manufacturer
138587-5 PRIMARY	L3harris Technologies, Inc Div Space & Airborne Systems (USA)

Frequently Asked Questions

What is NSN 5999-01-321-8993?

NSN 5999-01-321-8993 is a Heat Sink,electrical-Electronic, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.

What part numbers are listed for NSN 5999-01-321-8993?

NSN 5999-01-321-8993 has 1 manufacturer part number on file: 138587-5 (L3harris Technologies, Inc Div Space & Airborne Systems).

What are the specifications of 138587-5?

Key specifications for 138587-5: Overall Height: 1.299 INCHES NOMINAL IN; Overall Length: 5.943 INCHES NOMINAL IN; Overall Width: 5.554 INCHES NOMINAL IN. 0 specifications are documented in the U.S. Government catalog.

Is NSN 5999-01-321-8993 hazardous material?

Possible hazard — SDS may be required (DLA HMIC P). 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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