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PartsTable / COMPONENT / H-B-643
H-B-643 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

HOLDER,ELECTRICAL CONTACT BRUSH. Key specifications include width: 0.438 INCHES NOMINAL IN, diameter: 0.438 INCHES NOMINAL IN, overall_length: 8.250 INCHES NOMINAL IN, special_features: HANDLE MADE FROM 0.052-INCH DIAMETER CORROSION RESISTANT STEEL WIRE; LOOPED END HANDLE, style_designator: ROUND, TWISTED-IN-WIRE, brush_part_length: 2.875 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 7920-00-223-8005, 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
H-B-643
NSN: 7920-00-223-8005
FSC: 7920
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
width0.438 INCHES NOMINAL IN
diameter0.438 INCHES NOMINAL IN
overall_length8.250 INCHES NOMINAL IN
special_featuresHANDLE MADE FROM 0.052-INCH DIAMETER CORROSION RESISTANT STEEL WIRE; LOOPED END HANDLE
style_designatorROUND, TWISTED-IN-WIRE
brush_part_length2.875 INCHES NOMINAL IN
nondefinitive_spec/std_data2 TYPE AND 1 CLASS AND 2 SIZE
environmental_attribute_codePLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT
NSN7920-00-223-8005
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HOLDER,ELECTRICAL CONTACT BRUSH TITLE COMPONENT PN H-B-643 MFR HOLDER,ELECTRICAL CONT
KEY FEATURES
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 1 CLASS AND 2 SIZE
•
BRUSH PART LENGTH: 0.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT, METAL HANDLE
•
WIDTH: 0.438 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH5.750 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 1 CLASS AND 2 SIZE
BRUSH PART LENGTH0.750 INCHES NOMINAL IN
STYLE DESIGNATORFLAT, METAL HANDLE
WIDTH0.438 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
FF-B-171Interchangeable
interchangeable cross-reference
interchangeable
1974861Interchangeable
interchangeable cross-reference
interchangeable
9503X1Interchangeable
interchangeable cross-reference
interchangeable
9503Interchangeable
interchangeable cross-reference
interchangeable
MB2652-4PC25Interchangeable
interchangeable cross-reference
interchangeable
MB2158PC25Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H-B-643?
H-B-643 is a HOLDER,ELECTRICAL CONTACT BRUSH.
What parts can replace H-B-643?
There are 23 known substitutes for H-B-643: FF-B-171, 1974861, 9503X1 and 20 more. Substitute compatibility should be verified for your specific system.
Is H-B-643 still available?
H-B-643 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026