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5645A1 — HOLDER,ELECTRICAL CONTACT BRUSH

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

5645A1: HOLDER,ELECTRICAL CONTACT BRUSH.

HOLDER,ELECTRICAL CONTACT BRUSH. Key specifications include material: COPPER ALLOY BOX, inside_width: 0.761 INCHES NOMINAL IN, inside_length: 0.687 INCHES NOMINAL IN, overall_width: 0.980 INCHES NOMINAL IN, overall_length: 0.687 INCHES NOMINAL IN, inside_thickness: 0.316 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5977-00-256-0633, 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
5645A1
NSN: 5977-00-256-0633
FSC: 5977 — Electrical Contact Brushes and Electrodes
CAGE: 20019 — WARD LEONARD CT LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY BOX
inside_width0.761 INCHES NOMINAL IN
inside_length0.687 INCHES NOMINAL IN
overall_width0.980 INCHES NOMINAL IN
overall_length0.687 INCHES NOMINAL IN
inside_thickness0.316 INCHES NOMINAL IN
mounting_facilityTHREADED HOLES
overall_thickness2.344 INCHES NOMINAL IN
brush_spring_adjustabilityNONADJUSTABLE
mounting_facility_quantity2
brush_pressure_spring_type_accommodatedSPIRAL TORSION
NSN5977-00-256-0633
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HOLDER,ELECTRICAL CONTACT BRUSH TITLE COMPONENT PN 5645A1 MFR HOLDER,ELECTRICAL CONT
KEY FEATURES
•
BRUSH SPRING ADJUSTABILITY: NONADJUSTABLE
•
MOUNTING FACILITY QUANTITY: 2
•
INSIDE WIDTH: 0.761 INCHES NOMINAL IN
•
INSIDE LENGTH: 0.687 INCHES NOMINAL IN
•
OVERALL THICKNESS: 2.344 INCHES NOMINAL IN
•
BRUSH PRESSURE SPRING TYPE ACCOMMODATED: SPIRAL TORSION
TECHNICAL CHARACTERISTICS
BRUSH SPRING ADJUSTABILITYNONADJUSTABLE
MOUNTING FACILITY QUANTITY2
INSIDE WIDTH0.761 INCHES NOMINAL IN
INSIDE LENGTH0.687 INCHES NOMINAL IN
OVERALL THICKNESS2.344 INCHES NOMINAL IN
OVERALL LENGTH0.687 INCHES NOMINAL IN
OVERALL WIDTH0.980 INCHES NOMINAL IN
BRUSH PRESSURE SPRING TYPE ACCOMMODATEDSPIRAL TORSION
MOUNTING FACILITYTHREADED HOLES
INSIDE THICKNESS0.316 INCHES NOMINAL IN
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5645A1?
5645A1 is a HOLDER,ELECTRICAL CONTACT BRUSH.
What is the NSN for 5645A1?
5645A1 is cataloged in the U.S. Government catalog under NSN 5977-00-256-0633. 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.