PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A554-63Cluster Gear Hub

L3 Technologies, Inc. Div L3 Keo · NSN 6605-00-086-9719 · FSC 6605 · No Item Name Available
Verified by PartsTable
NSN 6605-00-086-9719 — this item is cataloged by the U.S. Government under National Stock Number 6605-00-086-9719. Primary manufacturer part number: A554-63.
Features
  • Cluster Gear Hub — FSC 6605
  • General Characteristics Item Description: CRES IAW QQ-S-763 CL-303; PASSIVATE FINISH; 1.000 IN. O/A LENGTH IN
  • 4 verified cross-references
  • Primary manufacturer: L3 Technologies, Inc. Div L3 Keo
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Cluster Gear Hub, cataloged under National Stock Number 6605-00-086-9719, is classified within Federal Supply Class 6605 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is L3 Technologies, Inc. Div L3 Keo. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6605-00-086-9719
Primary Part NumberA554-63
Item NameCluster Gear Hub
FSC / FSG6605 / 66 — No Item Name Available
ManufacturerL3 Technologies, Inc. Div L3 Keo
StatusACTIVE
General Characteristics Item DescriptionCRES IAW QQ-S-763 CL-303; PASSIVATE FINISH; 1.000 IN. O/A LENGTH IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5998-00-136-0479003499 INTERCHANGEABLE
Electronic Components Assembly
Moog Inc Div Moog Inc., Space and Defense - Salt Lake City
6320-00-222-9457 INTERCHANGEABLE
Detector,smoke and
Cross-Reference Index
Part NumberManufacturer
554A003499 L3 Technologies, Inc. Div L3 Keo (USA)
A554-63 PRIMARY L3 Technologies, Inc. Div L3 Keo (USA)
554A003499 Northrop Grumman Systems Corporation (USA)
003499 L3 Technologies, Inc. Div L3 Keo (USA)
Related Parts
5998-00-136-0479INTERCHANGEABLE
ELECTRONIC COMPONENTS ASSEMBLY
003499
6320-00-222-9457INTERCHANGEABLE
DETECTOR,SMOKE AND

Frequently Asked Questions

What is NSN 6605-00-086-9719?

NSN 6605-00-086-9719 is a Cluster Gear Hub, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 6605 (No Item Name Available). Status: active.

What are the part numbers for NSN 6605-00-086-9719?

NSN 6605-00-086-9719 has 4 cross-referenced part numbers: 554A003499 (L3 Technologies, Inc. Div L3 Keo), A554-63 (L3 Technologies, Inc. Div L3 Keo), 554A003499 (Northrop Grumman Systems Corporation), 003499 (L3 Technologies, Inc. Div L3 Keo).

What NSN replaces 6605-00-086-9719?

There are 2 known substitutes for 6605-00-086-9719: 5998-00-136-0479, 6320-00-222-9457. Verify interchangeability with system specifications before substitution.

What are the specifications of A554-63?

Key specifications for A554-63: General Characteristics Item Description: CRES IAW QQ-S-763 CL-303; PASSIVATE FINISH; 1.000 IN. O/A LENGTH IN. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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