PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3544530-3Lock,inertia Reel

The Boeing Company · NSN 1680-00-658-4400 · FSC 1680 · No Item Name Available
Verified by PartsTable
NSN 1680-00-658-4400 — this item is cataloged by the U.S. Government under National Stock Number 1680-00-658-4400. Primary manufacturer part number: 3544530-3.
Features
  • Lock,inertia Reel — FSC 1680
  • 4 verified cross-references
  • Primary manufacturer: The Boeing Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Lock,inertia Reel, cataloged under National Stock Number 1680-00-658-4400, is classified within Federal Supply Class 1680 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is The Boeing Company. This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameLock,inertia Reel
FSC / FSG1680 — No Item Name Available (FSG 16)
ManufacturersHardman Aircraft Inc (CAGE 83115); The Boeing Company (CAGE 88277); Nell-Joy Industries, Inc. (CAGE 60663)
Technical Specifications
ParameterValue
NSN1680-00-658-4400
Primary Part Number3544530-3
Item NameLock,inertia Reel
FSC / FSG1680 / 16 — No Item Name Available
ManufacturerThe Boeing Company
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5815-00-126-41723899 INTERCHANGEABLE
Bushing
Telemechanics Inc
5330-00-235-95293899 INTERCHANGEABLE
Gasket
Lawler Manufacturing Company, Inc.
4310-00-449-51953899 INTERCHANGEABLE
Ring,piston
Kaydon Ring & Seal Inc Dba Skf Precision Technologies
5910-00-665-0260SMB283236 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6635-00-736-517647059 INTERCHANGEABLE
Holder,glass Filter
Illinois Tool Works, Inc. Div Magnaflux
2530-00-814-3322FD8265 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
5365-01-088-3154010883154-04124 INTERCHANGEABLE
Spacer,ring
Dla Aviation Engineering Div Department of Defense
6680-01-098-969338991 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
6240-01-224-76563918206 INTERCHANGEABLE
Lamp,incandescent
Cummins Inc.
6610-01-225-04143899 INTERCHANGEABLE
Body Assembly,mecha
Kearflex Engineering Company
Cross-Reference Index
Part NumberManufacturer
3899-1 Hardman Aircraft Inc (USA)
3544530-3 PRIMARY The Boeing Company (USA)
3899-1 Nell-Joy Industries, Inc. (USA)
3899 Hardman Aircraft Inc (USA)
Related Parts
5815-00-126-4172INTERCHANGEABLE
BUSHING
3899
5330-00-235-9529INTERCHANGEABLE
GASKET
3899
4310-00-449-5195INTERCHANGEABLE
RING,PISTON
3899
5910-00-665-0260INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
SMB283236
6635-00-736-5176INTERCHANGEABLE
HOLDER,GLASS FILTER
47059
2530-00-814-3322INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
FD8265
5365-01-088-3154INTERCHANGEABLE
SPACER,RING
010883154-04124
6680-01-098-9693INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
38991
6240-01-224-7656INTERCHANGEABLE
LAMP,INCANDESCENT
3918206
6610-01-225-0414INTERCHANGEABLE
BODY ASSEMBLY,MECHA
3899
5120-01-335-0701INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
3020-01-416-1643INTERCHANGEABLE
GEAR,SPUR
38991

Frequently Asked Questions

What is NSN 1680-00-658-4400?

NSN 1680-00-658-4400 is a Lock,inertia Reel, manufactured by The Boeing Company, classified under FSC 1680 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 1680-00-658-4400?

NSN 1680-00-658-4400 has 4 cross-referenced part numbers: 3899-1 (Hardman Aircraft Inc), 3544530-3 (The Boeing Company), 3899-1 (Nell-Joy Industries, Inc.), 3899 (Hardman Aircraft Inc).

What NSN replaces 1680-00-658-4400?

There are 12 known substitutes for 1680-00-658-4400: 5815-00-126-4172, 5330-00-235-9529, 4310-00-449-5195 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 1680-00-658-4400 still in active supply?

NSN 1680-00-658-4400 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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