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198121 — BRUSH,ELECTRICAL CONTACT

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

198121: BRUSH,ELECTRICAL CONTACT.

The BRUSH,ELECTRICAL CONTACT is a the manufacturer industrial component. Key specifications include width: 1.500 INCHES NOMINAL IN, length: 1.750 INCHES NOMINAL IN, material: ELECTROGRAPHITIC, thickness: 0.750 INCHES NOMINAL IN, top_style: FLAT WITH LEFT EDGE BEVELED, body_style: RECTANGULAR COMMUTATOR. This part is cataloged in the U.S.

Government catalog under NSN 5977-00-280-9056, 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
198121
NSN: 5977-00-280-9056
FSC: 5977 — Electrical Contact Brushes and Electrodes
CAGE: 03486 — HOMEWOOD PRODUCTS CORP (USA)
SPECIFICATIONS
width1.500 INCHES NOMINAL IN
length1.750 INCHES NOMINAL IN
materialELECTROGRAPHITIC
thickness0.750 INCHES NOMINAL IN
top_styleFLAT WITH LEFT EDGE BEVELED
body_styleRECTANGULAR COMMUTATOR
style_designatorONE PIECE
brush_shunt_length3.000 INCHES NOMINAL SINGLE SHUNT IN
contact_face_styleFLAT
terminal_slot_width0.219 INCHES NOMINAL IN
shunt_position_designator2
terminal_type_and_quantity1 STRAIGHT W/SLOT
NSN5977-00-280-9056
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BRUSH,ELECTRICAL CONTACT TITLE COMPONENT PN 198121 MFR BRUSH,ELECTRICAL CONTA
KEY FEATURES
•
LENGTH: 1.750 INCHES NOMINAL IN
•
BODY STYLE: RECTANGULAR COMMUTATOR
•
TERMINAL SLOT WIDTH: 0.219 INCHES NOMINAL IN
•
TOP STYLE: FLAT WITH LEFT EDGE BEVELED
•
SHUNT POSITION DESIGNATOR: 2
•
CRITICALITY CODE JUSTIFICATION: MATT AND MDCL
•
STYLE DESIGNATOR: ONE PIECE
•
MATERIAL DOCUMENT AND CLASSIFICATION: CARBONE CRADE W+11 MFR REF SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS
LENGTH1.750 INCHES NOMINAL IN
BODY STYLERECTANGULAR COMMUTATOR
TERMINAL SLOT WIDTH0.219 INCHES NOMINAL IN
TOP STYLEFLAT WITH LEFT EDGE BEVELED
SHUNT POSITION DESIGNATOR2
CRITICALITY CODE JUSTIFICATIONMATT AND MDCL
STYLE DESIGNATORONE PIECE
MATERIAL DOCUMENT AND CLASSIFICATIONCARBONE CRADE W+11 MFR REF SINGLE MATERIAL RESPONSE
BRUSH SHUNT LENGTH3.000 INCHES NOMINAL SINGLE SHUNT IN
CONTACT FACE STYLEFLAT
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 2
S916677Reference document
Same NSN cross-reference
Reference document — Secondary reference
NEMA PUB CB1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 198121?
198121 is a BRUSH,ELECTRICAL CONTACT.
What parts can replace 198121?
There are 2 known substitutes for 198121: S916677, NEMA PUB CB1. Substitute compatibility should be verified for your specific system.
What is the NSN for 198121?
198121 is cataloged in the U.S. Government catalog under NSN 5977-00-280-9056. 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.