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MAY12A — BRUSH,ELECTRICAL CONTACT

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

MAY12A: BRUSH,ELECTRICAL CONTACT.

The BRUSH,ELECTRICAL CONTACT is a the manufacturer industrial component. Key specifications include width: 0.875 INCHES NOMINAL IN, length: 0.513 INCHES NOMINAL IN, material: METAL GRAPHITE, thickness: 0.211 INCHES NOMINAL IN, top_style: FLAT WITH RECTANGULAR SLOT, body_style: RECTANGULAR COMMUTATOR. This part is cataloged in the U.S.

Government catalog under NSN 5977-00-214-0628, 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
MAY12A
NSN: 5977-00-214-0628
FSC: 5977 — Electrical Contact Brushes and Electrodes
CAGE: 24975 — PRESTOLITE ELECTRIC INC (USA)
SPECIFICATIONS
width0.875 INCHES NOMINAL IN
length0.513 INCHES NOMINAL IN
materialMETAL GRAPHITE
thickness0.211 INCHES NOMINAL IN
top_styleFLAT WITH RECTANGULAR SLOT
body_styleRECTANGULAR COMMUTATOR
slot_depth0.040 INCHES NOMINAL IN
slot_width0.250 INCHES NOMINAL IN
style_designatorONE PIECE
brush_shunt_length3.125 INCHES NOMINAL SINGLE SHUNT IN
contact_face_styleFLAT
shunt_position_designator10
NSN5977-00-214-0628
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BRUSH,ELECTRICAL CONTACT TITLE COMPONENT PN MAY12A MFR BRUSH,ELECTRICAL CONTA
KEY FEATURES
•
OUTER EDGE TO SLOT EDGE DISTANCE: 0.312 INCHES NOMINAL IN
•
LENGTH: 0.513 INCHES NOMINAL IN
•
BODY STYLE: RECTANGULAR COMMUTATOR
•
TOP STYLE: FLAT WITH RECTANGULAR SLOT
•
SHUNT POSITION DESIGNATOR: 10
•
STYLE DESIGNATOR: ONE PIECE
•
MATERIAL DOCUMENT AND CLASSIFICATION: ELECTRIC AUTO LIFE CO,GR 9A MFR REF SINGLE MATERIAL RESPONSE A
•
BRUSH SHUNT LENGTH: 3.125 INCHES NOMINAL SINGLE SHUNT IN
TECHNICAL CHARACTERISTICS
OUTER EDGE TO SLOT EDGE DISTANCE0.312 INCHES NOMINAL IN
LENGTH0.513 INCHES NOMINAL IN
BODY STYLERECTANGULAR COMMUTATOR
TOP STYLEFLAT WITH RECTANGULAR SLOT
SHUNT POSITION DESIGNATOR10
STYLE DESIGNATORONE PIECE
MATERIAL DOCUMENT AND CLASSIFICATIONELECTRIC AUTO LIFE CO,GR 9A MFR REF SINGLE MATERIAL RESPONSE A
BRUSH SHUNT LENGTH3.125 INCHES NOMINAL SINGLE SHUNT IN
CONTACT FACE STYLEFLAT
SHUNT INSULATION PROVISION AND QUANTITY1 UNINSULATED
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
ANSI/NEMA PUB NO. CB1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MAY12A?
MAY12A is a BRUSH,ELECTRICAL CONTACT.
What parts can replace MAY12A?
There is 1 known substitute for MAY12A: ANSI/NEMA PUB NO. CB1. Substitute compatibility should be verified for your specific system.
What is the NSN for MAY12A?
MAY12A is cataloged in the U.S. Government catalog under NSN 5977-00-214-0628. 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.