PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

10543Pen,direction Assembly

Belfort Instrument Company · NSN 6660-00-055-5419 · FSC 6660 · No Item Name Available
Verified by PartsTable
NSN 6660-00-055-5419 — this item is cataloged by the U.S. Government under National Stock Number 6660-00-055-5419. Primary manufacturer part number: 10543.
Features
  • Pen,direction Assembly — FSC 6660
  • General Characteristics Item Description: ONE EACH FSCM 82205 PART NO. 10635,10541,105402
  • 1 verified cross-reference
  • Primary manufacturer: Belfort Instrument Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Pen,direction Assembly, cataloged under National Stock Number 6660-00-055-5419, is classified within Federal Supply Class 6660 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Belfort Instrument Company. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6660-00-055-5419
Primary Part Number10543
Item NamePen,direction Assembly
FSC / FSG6660 / 66 — No Item Name Available
ManufacturerBelfort Instrument Company
StatusACTIVE
General Characteristics Item DescriptionONE EACH FSCM 82205 PART NO. 10635,10541,105402
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5360-00-076-369710543 INTERCHANGEABLE
Spring,helical,torsion
Frontgrade Technologies Inc. Dba Frontgrade Technologies Inc.
5950-00-083-575510543 INTERCHANGEABLE
Transformer,radio Frequency
Drs Signal Solutions, Inc.
4320-00-148-778941285 INTERCHANGEABLE
Rod Assy,piston
Curtiss-Wright Electro-Mechanical Corporation Div Epd
5342-00-428-49071054-3 INTERCHANGEABLE
Plug
Rolls-Royce Controls and Data Services Limited
5910-00-513-0633640304 INTERCHANGEABLE
Capacitor Assembly
Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc
3120-00-517-8482A205-1 INTERCHANGEABLE
Bearing,sleeve
Chrysler Corp Amplex Div
2925-00-573-9540 INTERCHANGEABLE
Conduit Assembly,branched
5998-00-736-235210543 INTERCHANGEABLE
Circuit Card Assembly
Custom Metering Company Inc
3040-00-868-80011054-3 INTERCHANGEABLE
Collar,shaft
Drs Signal Solutions, Inc.
5330-01-047-770910543 INTERCHANGEABLE
Seal,plain
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
Cross-Reference Index
Part NumberManufacturer
10543 PRIMARY Belfort Instrument Company (USA)
Related Parts
5360-00-076-3697INTERCHANGEABLE
SPRING,HELICAL,TORSION
10543
5950-00-083-5755INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
10543
4320-00-148-7789INTERCHANGEABLE
ROD ASSY,PISTON
41285
5342-00-428-4907INTERCHANGEABLE
PLUG
1054-3
5910-00-513-0633INTERCHANGEABLE
CAPACITOR ASSEMBLY
640304
3120-00-517-8482INTERCHANGEABLE
BEARING,SLEEVE
A205-1
2925-00-573-9540INTERCHANGEABLE
CONDUIT ASSEMBLY,BRANCHED
5998-00-736-2352INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
10543
3040-00-868-8001INTERCHANGEABLE
COLLAR,SHAFT
1054-3
5330-01-047-7709INTERCHANGEABLE
SEAL,PLAIN
10543
1650-01-275-2542INTERCHANGEABLE
MANIFOLD ASSEMBLY,HYDRAULIC
10543
7690-01-512-0417INTERCHANGEABLE
MARKER,IDENTIFICATION
10543SP

Frequently Asked Questions

What is NSN 6660-00-055-5419?

NSN 6660-00-055-5419 is a Pen,direction Assembly, manufactured by Belfort Instrument Company, classified under FSC 6660 (No Item Name Available). Status: active.

What are the part numbers for NSN 6660-00-055-5419?

NSN 6660-00-055-5419 has 1 cross-referenced part number: 10543 (Belfort Instrument Company).

What NSN replaces 6660-00-055-5419?

There are 12 known substitutes for 6660-00-055-5419: 5360-00-076-3697, 5950-00-083-5755, 4320-00-148-7789 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 10543?

Key specifications for 10543: General Characteristics Item Description: ONE EACH FSCM 82205 PART NO. 10635,10541,105402. 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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