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543-A — HOLDER,ELECTRICAL CONTACT BRUSH

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

543-A: HOLDER,ELECTRICAL CONTACT BRUSH.

HOLDER,ELECTRICAL CONTACT BRUSH. Key specifications include inside_width: 0.188 INCHES NOMINAL IN, inside_length: 0.555 INCHES NOMINAL IN, thread_length: 0.109 INCHES NOMINAL IN, overall_length: 0.555 INCHES NOMINAL IN, inside_thickness: 0.188 INCHES NOMINAL IN, overall_diameter: 0.432 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5977-00-225-9355, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
543-A
NSN: 5977-00-225-9355
FSC: 5977 — Electrical Contact Brushes and Electrodes
CAGE: 46992 — PHOENIX ELECTRIC MFG CO (USA)
SPECIFICATIONS
inside_width0.188 INCHES NOMINAL IN
inside_length0.555 INCHES NOMINAL IN
thread_length0.109 INCHES NOMINAL IN
overall_length0.555 INCHES NOMINAL IN
inside_thickness0.188 INCHES NOMINAL IN
overall_diameter0.432 INCHES NOMINAL IN
mounting_facilityPRESS FIT
top_thread_locationEXTERNAL
mounting_facility_quantity1
thread_size_and_series/type_designator0.313-32 UNEF
NSN5977-00-225-9355
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HOLDER,ELECTRICAL CONTACT BRUSH TITLE COMPONENT PN 543-A MFR HOLDER,ELECTRICAL CONT
KEY FEATURES
•
MOUNTING FACILITY QUANTITY: 1
•
INSIDE WIDTH: 0.188 INCHES NOMINAL IN
•
INSIDE LENGTH: 0.555 INCHES NOMINAL IN
•
OVERALL DIAMETER: 0.432 INCHES NOMINAL IN
•
TOP THREAD LOCATION: EXTERNAL
•
THREAD LENGTH: 0.109 INCHES NOMINAL IN
•
MOUNTING FACILITY: PRESS FIT
TECHNICAL CHARACTERISTICS
MOUNTING FACILITY QUANTITY1
INSIDE WIDTH0.188 INCHES NOMINAL IN
INSIDE LENGTH0.555 INCHES NOMINAL IN
OVERALL DIAMETER0.432 INCHES NOMINAL IN
TOP THREAD LOCATIONEXTERNAL
THREAD LENGTH0.109 INCHES NOMINAL IN
OVERALL LENGTH0.555 INCHES NOMINAL IN
MOUNTING FACILITYPRESS FIT
INSIDE THICKNESS0.188 INCHES NOMINAL IN
THREAD SIZE AND SERIES/TYPE DESIGNATOR0.313-32 UNEF
OTHER ITEMS IN FSC 5977 — Electrical Contact Brushes and Electrodes
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5977-00-001-8018 5977-00-001-8867 5977-00-002-9654 5977-00-003-0257 5977-00-003-0258 5977-00-003-0264 5977-00-003-1196 5977-00-003-1197
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 543-A?
543-A is a HOLDER,ELECTRICAL CONTACT BRUSH.
What is the NSN for 543-A?
543-A is cataloged in the U.S. Government catalog under NSN 5977-00-225-9355. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.