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491800 — HOLDER,ELECTRICAL CONTACT BRUSH

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

491800: HOLDER,ELECTRICAL CONTACT BRUSH.

HOLDER,ELECTRICAL CONTACT BRUSH. Key specifications include inside_length: 2.562 INCHES NOMINAL IN, terminal_type: SOLDER LUG, overall_length: 3.437 INCHES NOMINAL IN, inside_diameter: 0.219 INCHES NOMINAL IN, style_designator: ROUND, width_across_flats: 0.866 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5977-00-405-4852, 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
491800
NSN: 5977-00-405-4852
FSC: 5977 — Electrical Contact Brushes and Electrodes
CAGE: 72850 — PUROLATOR PRODUCTS CO DIV MOTOR COMPONENTS, LLC (USA)
SPECIFICATIONS
inside_length2.562 INCHES NOMINAL IN
terminal_typeSOLDER LUG
overall_length3.437 INCHES NOMINAL IN
inside_diameter0.219 INCHES NOMINAL IN
style_designatorROUND
terminal_quantity1
width_across_flats0.866 INCHES NOMINAL IN
top_thread_locationEXTERNAL
width_across_corners0.994 INCHES NOMINAL IN
brush_spring_adjustabilityNONADJUSTABLE
furnished_items_and_quantity1 BRUSH
brush_quantity_accommodated_per_holder1
NSN5977-00-405-4852
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HOLDER,ELECTRICAL CONTACT BRUSH TITLE COMPONENT PN 491800 MFR HOLDER,ELECTRICAL CONT
KEY FEATURES
•
FURNISHED ITEMS AND QUANTITY: 1 BRUSH
•
BRUSH SPRING ADJUSTABILITY: NONADJUSTABLE
•
WIDTH ACROSS FLATS: 0.866 INCHES NOMINAL IN
•
TERMINAL QUANTITY: 1
•
TERMINAL TYPE: SOLDER LUG
•
INSIDE LENGTH: 2.562 INCHES NOMINAL IN
•
TOP THREAD LOCATION: EXTERNAL
•
STYLE DESIGNATOR: ROUND
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 BRUSH
BRUSH SPRING ADJUSTABILITYNONADJUSTABLE
WIDTH ACROSS FLATS0.866 INCHES NOMINAL IN
TERMINAL QUANTITY1
TERMINAL TYPESOLDER LUG
INSIDE LENGTH2.562 INCHES NOMINAL IN
TOP THREAD LOCATIONEXTERNAL
STYLE DESIGNATORROUND
OVERALL LENGTH3.437 INCHES NOMINAL IN
BRUSH QUANTITY ACCOMMODATED PER HOLDER1
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 — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 491800?
491800 is a HOLDER,ELECTRICAL CONTACT BRUSH.
What is the NSN for 491800?
491800 is cataloged in the U.S. Government catalog under NSN 5977-00-405-4852. 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.