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S128-4-2 — BRUSH,ELECTRICAL CONTACT

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

S128-4-2: BRUSH,ELECTRICAL CONTACT.

The BRUSH,ELECTRICAL CONTACT is a the manufacturer industrial component. Key specifications include width: 2.160 INCHES NOMINAL IN, length: 2.560 INCHES NOMINAL IN, radius: 1.823 INCHES NOMINAL IN, material: PLASTIC METHYL METHACRYLATE, thickness: 0.005 INCHES NOMINAL IN, top_style: CYLINDRICAL HEAD. This part is cataloged in the U.S.

Government catalog under NSN 5977-00-242-1752, 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
S128-4-2
NSN: 5977-00-242-1752
NIINs: 002421752, 013188486, 014610703
FSC: 5977 — Electrical Contact Brushes and Electrodes
CAGE: 84421 — GRACO METAL PRODUCTS INC (USA)
SPECIFICATIONS
width2.160 INCHES NOMINAL IN
length2.560 INCHES NOMINAL IN
radius1.823 INCHES NOMINAL IN
materialPLASTIC METHYL METHACRYLATE
thickness0.005 INCHES NOMINAL IN
top_styleCYLINDRICAL HEAD
body_styleRECTANGULAR COMMUTATOR
head_length0.128 INCHES NOMINAL IN
head_diameter0.165 INCHES NOMINAL IN
special_features2.562 IN. HUB OD,3.750 IN. HUB LG,5 BOLTS ON 4.500 IN. BC,1.250 IN. INNER AND OUTER BRG BORE DIA,TAPERED BRG IN
style_designatorONE PIECE
basic_shape_styleRECTANGULAR
NSN5977-00-242-1752
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BRUSH,ELECTRICAL CONTACT TITLE COMPONENT PN S128-4-2 MFR BRUSH,ELECTRICAL CONTA
KEY FEATURES
•
LENGTH: 0.628 INCHES NOMINAL IN
•
LARGEST OUTSIDE DIAMETER: 0.184 INCHES NOMINAL IN
•
BODY STYLE: RECTANGULAR COMMUTATOR
•
RADIUS: 1.823 INCHES NOMINAL IN
•
TOP STYLE: CYLINDRICAL HEAD
•
STYLE DESIGNATOR: ONE PIECE
•
SPRING FREE LENGTH: 1.350 INCHES NOMINAL IN
•
PRESSURE SPRING TYPE AND QUANTITY: 1 CYLINDRICAL
TECHNICAL CHARACTERISTICS
LENGTH0.628 INCHES NOMINAL IN
LARGEST OUTSIDE DIAMETER0.184 INCHES NOMINAL IN
BODY STYLERECTANGULAR COMMUTATOR
RADIUS1.823 INCHES NOMINAL IN
TOP STYLECYLINDRICAL HEAD
STYLE DESIGNATORONE PIECE
SPRING FREE LENGTH1.350 INCHES NOMINAL IN
PRESSURE SPRING TYPE AND QUANTITY1 CYLINDRICAL
HEAD LENGTH0.128 INCHES NOMINAL IN
CONTACT FACE STYLECONCAVE
SUBSTITUTES & CROSS-REFERENCES 4
103-5194-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
S303-1010P2Reference document
Same NSN cross-reference
Reference document — Secondary reference
103-5194-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
7511Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S128-4-2?
S128-4-2 is a BRUSH,ELECTRICAL CONTACT.
What parts can replace S128-4-2?
There are 4 known substitutes for S128-4-2: 103-5194-2, S303-1010P2, 103-5194-1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S128-4-2?
S128-4-2 is cataloged in the U.S. Government catalog under NSN 5977-00-242-1752. 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.