A7778 — BRUSH,ELECTRICAL CONTACT

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

A7778: BRUSH,ELECTRICAL CONTACT.

The BRUSH,ELECTRICAL CONTACT is a the manufacturer industrial component. Key specifications include angle: 40.0 DEGREES NOMINAL, width: 1.375 INCHES NOMINAL IN, length: 1.625 INCHES NOMINAL IN, material: ELECTROGRAPHITIC, thickness: 0.500 INCHES NOMINAL IN, top_style: BEVELED FRONT WITH LEFT SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5977-00-280-6759, 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

A7778

NSN: 5977-00-280-6759
NIINs: 002806759, 011600303
FSC: 5977 — Electrical Contact Brushes and Electrodes
CAGE: 07860 — BOGUE ELECTRIC MANUFACTURING CO (USA)

SPECIFICATIONS

angle	40.0 DEGREES NOMINAL
width	1.375 INCHES NOMINAL IN
length	1.625 INCHES NOMINAL IN
material	ELECTROGRAPHITIC
thickness	0.500 INCHES NOMINAL IN
top_style	BEVELED FRONT WITH LEFT SHOULDER
body_style	RECTANGULAR COMMUTATOR
bevel_angle	30.0 DEGREES NOMINAL
peripheral_speed	8000 FEET PER MINUTE FT
style_designator	ONE PIECE
brush_shunt_length	3.000 INCHES NOMINAL SINGLE SHUNT IN
contact_face_style	BEVELED
NSN	5977-00-280-6759

COMPONENT DIAGRAM

KEY FEATURES

•

LENGTH: 1.625 INCHES NOMINAL IN

•

PERIPHERAL SPEED: 8000 FEET PER MINUTE FT

•

BODY STYLE: RECTANGULAR COMMUTATOR

•

TERMINAL SLOT WIDTH: 0.344 INCHES NOMINAL IN

•

TOP STYLE: BEVELED FRONT WITH LEFT SHOULDER

•

SHUNT POSITION DESIGNATOR: 12

•

CRITICALITY CODE JUSTIFICATION: MATT AND MDCL

•

STYLE DESIGNATOR: ONE PIECE

TECHNICAL CHARACTERISTICS

LENGTH	1.625 INCHES NOMINAL IN
PERIPHERAL SPEED	8000 FEET PER MINUTE FT
BODY STYLE	RECTANGULAR COMMUTATOR
TERMINAL SLOT WIDTH	0.344 INCHES NOMINAL IN
TOP STYLE	BEVELED FRONT WITH LEFT SHOULDER
SHUNT POSITION DESIGNATOR	12
CRITICALITY CODE JUSTIFICATION	MATT AND MDCL
STYLE DESIGNATOR	ONE PIECE
MATERIAL DOCUMENT AND CLASSIFICATION	UNION CARBIDE CORP,CARBON PRODUCTS DIV,GR SA-45 MFR REF SINGLE MATERIAL RESPONSE
ANGLE	40.0 DEGREES NOMINAL

SUBSTITUTES & CROSS-REFERENCES 5

D8475PC29Reference document

Same NSN cross-reference

Reference document — Secondary reference

MILB3743Reference document

Same NSN cross-reference

Reference document — Identification reference

A7778P4Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

RC16-4401Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

ANSI/NEMA PUB NO. CB1Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is A7778?

A7778 is a BRUSH,ELECTRICAL CONTACT.

What parts can replace A7778?

There are 5 known substitutes for A7778: D8475PC29, MILB3743, A7778P4 and 2 more. Substitute compatibility should be verified for your specific system.

What is the NSN for A7778?

A7778 is cataloged in the U.S. Government catalog under NSN 5977-00-280-6759. This indicates validated use in U.S. government and defense supply chains.

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A7778 — BRUSH,ELECTRICAL CONTACT

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