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S1603478 — BRUSH,ELECTRICAL CONTACT

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

S1603478: BRUSH,ELECTRICAL CONTACT.

The BRUSH,ELECTRICAL CONTACT is a the manufacturer industrial component. Key specifications include width: 0.750 INCHES NOMINAL IN, length: 1.250 INCHES NOMINAL IN, material: ELECTROGRAPHITIC, thickness: 0.375 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 5977-00-296-0287, 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
S1603478
NSN: 5977-00-296-0287
FSC: 5977 — Electrical Contact Brushes and Electrodes
CAGE: 79500 — WESTINGHOUSE ELECTRIC CORP (USA)
SPECIFICATIONS
width0.750 INCHES NOMINAL IN
length1.250 INCHES NOMINAL IN
materialELECTROGRAPHITIC
thickness0.375 INCHES NOMINAL IN
top_styleFLAT WITH LEFT EDGE BEVELED
body_styleRECTANGULAR COMMUTATOR
peripheral_speed6000 FEET PER MINUTE FT
special_featuresTERMINAL TYPE FLAG TYPE OFF SET WITH SLOT,QUANTITY ONE
style_designatorONE PIECE
brush_shunt_length2.000 INCHES NOMINAL SINGLE SHUNT IN
contact_face_styleFLAT
terminal_slot_width0.219 INCHES NOMINAL IN
NSN5977-00-296-0287
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BRUSH,ELECTRICAL CONTACT TITLE COMPONENT PN S1603478 MFR BRUSH,ELECTRICAL CONTA
KEY FEATURES
•
LENGTH: 1.250 INCHES NOMINAL IN
•
PERIPHERAL SPEED: 6000 FEET PER MINUTE FT
•
BODY STYLE: RECTANGULAR COMMUTATOR
•
TERMINAL SLOT WIDTH: 0.219 INCHES NOMINAL IN
•
TOP STYLE: FLAT WITH LEFT EDGE BEVELED
•
SHUNT POSITION DESIGNATOR: 2
•
STYLE DESIGNATOR: ONE PIECE
•
MATERIAL DOCUMENT AND CLASSIFICATION: WESTINGHOUSE ELECTRIC CORP,GRADE W+48B MFR REF SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS
LENGTH1.250 INCHES NOMINAL IN
PERIPHERAL SPEED6000 FEET PER MINUTE FT
BODY STYLERECTANGULAR COMMUTATOR
TERMINAL SLOT WIDTH0.219 INCHES NOMINAL IN
TOP STYLEFLAT WITH LEFT EDGE BEVELED
SHUNT POSITION DESIGNATOR2
STYLE DESIGNATORONE PIECE
MATERIAL DOCUMENT AND CLASSIFICATIONWESTINGHOUSE ELECTRIC CORP,GRADE W+48B MFR REF SINGLE MATERIAL RESPONSE
BRUSH SHUNT LENGTH2.000 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 1
27D7283ITEM1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 S1603478?
S1603478 is a BRUSH,ELECTRICAL CONTACT.
What parts can replace S1603478?
There is 1 known substitute for S1603478: 27D7283ITEM1. Substitute compatibility should be verified for your specific system.
What is the NSN for S1603478?
S1603478 is cataloged in the U.S. Government catalog under NSN 5977-00-296-0287. 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.