PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12717Synchro Assembly

L3 Technologies, Inc. Div L3 Keo · NSN 5990-00-949-8450 · FSC 5990 · No Item Name Available
Verified by PartsTable
NSN 5990-00-949-8450 — this item is cataloged by the U.S. Government under National Stock Number 5990-00-949-8450. Primary manufacturer part number: 12717.
Features
  • Synchro Assembly — FSC 5990
  • 5 verified cross-references
  • Primary manufacturer: L3 Technologies, Inc. Div L3 Keo
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Synchro Assembly, cataloged under National Stock Number 5990-00-949-8450, is classified within Federal Supply Class 5990 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is L3 Technologies, Inc. Div L3 Keo. This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSynchro Assembly
FSC / FSG5990 — No Item Name Available (FSG 59)
ManufacturersL3 Technologies, Inc. Div L3 Keo (CAGE 34228); Northrop Grumman Systems Corporation (CAGE 03956)
Technical Specifications
ParameterValue
NSN5990-00-949-8450
Primary Part Number12717
Item NameSynchro Assembly
FSC / FSG5990 / 59 — No Item Name Available
ManufacturerL3 Technologies, Inc. Div L3 Keo
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
9540-00-060-0562 INTERCHANGEABLE
Beam,structural
2530-00-572-4307 INTERCHANGEABLE
Brake Shoe
5360-00-614-308212717 INTERCHANGEABLE
Spring,armature Ret
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5950-01-030-7038127-17 INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon Co
6550-01-432-71904402193 INTERCHANGEABLE
Blood Collecting-Culture Kit
Becton Dickinson and Co Primary Care Diagnostics Div
5120-01-580-9773 INTERCHANGEABLE
Screwdriver Attachment,socket Wr
Cross-Reference Index
Part NumberManufacturer
12717 PRIMARY L3 Technologies, Inc. Div L3 Keo (USA)
686F012717 L3 Technologies, Inc. Div L3 Keo (USA)
F686-103-1 PRIMARY L3 Technologies, Inc. Div L3 Keo (USA)
686F012717 PRIMARY Northrop Grumman Systems Corporation (USA)
F686-103-1 PRIMARY Northrop Grumman Systems Corporation (USA)
Related Parts
9540-00-060-0562INTERCHANGEABLE
BEAM,STRUCTURAL
2530-00-572-4307INTERCHANGEABLE
BRAKE SHOE
5360-00-614-3082INTERCHANGEABLE
SPRING,ARMATURE RET
12717
5950-01-030-7038INTERCHANGEABLE
COIL,RADIO FREQUENCY
127-17
6550-01-432-7190INTERCHANGEABLE
BLOOD COLLECTING-CULTURE KIT
4402193
5120-01-580-9773INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR

Frequently Asked Questions

What is NSN 5990-00-949-8450?

NSN 5990-00-949-8450 is a Synchro Assembly, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 5990 (No Item Name Available). Status: active.

What are the part numbers for NSN 5990-00-949-8450?

NSN 5990-00-949-8450 has 5 cross-referenced part numbers: 12717 (L3 Technologies, Inc. Div L3 Keo), 686F012717 (L3 Technologies, Inc. Div L3 Keo), F686-103-1 (L3 Technologies, Inc. Div L3 Keo), 686F012717 (Northrop Grumman Systems Corporation), F686-103-1 (Northrop Grumman Systems Corporation).

What NSN replaces 5990-00-949-8450?

There are 6 known substitutes for 5990-00-949-8450: 9540-00-060-0562, 2530-00-572-4307, 5360-00-614-3082 and 3 more. Verify interchangeability with system specifications before substitution.

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