6778191 — BRAKE DRUM

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

6778191: BRAKE DRUM.

The BRAKE DRUM is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, cooling_fin: NOT INCLUDED, balancing_pad: NOT INCLUDED, overall_width: 2.055 INCHES MINIMUM AND 2.085 INCHES MAXIMUM IN, oil_drain_hole: NOT INCLUDED, adjustment_hole: NOT INCLUDED. This part is cataloged in the U.S.

Government catalog under NSN 2530-00-080-6778, 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

6778191

NSN: 2530-00-080-6778
FSC: 2530 — Vehicular Brake, Steering, Axle, Wheel, and Track Components
CAGE: 73342 — ALLISON TRANSMISSION INC DBA ALLISON TRANSMISSION, INC (USA)

SPECIFICATIONS

material	STEEL OVERALL
cooling_fin	NOT INCLUDED
balancing_pad	NOT INCLUDED
overall_width	2.055 INCHES MINIMUM AND 2.085 INCHES MAXIMUM IN
oil_drain_hole	NOT INCLUDED
adjustment_hole	NOT INCLUDED
inspection_hole	NOT INCLUDED
center_hole_diameter	4.875 INCHES MINIMUM AND 4.879 INCHES MAXIMUM IN
braking_surface_width	1.620 INCHES NOMINAL IN
mounting_hole_spacing	EQUALLY SPACED ON 2-7/8 IN. BOLT CIRCLE IN
mounting_hole_diameter	0.401 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN
mounting_hole_quantity	4
NSN	2530-00-080-6778

COMPONENT DIAGRAM

KEY FEATURES

•

MOUNTING HOLE QUANTITY: 4

•

ADJUSTMENT HOLE: NOT INCLUDED

•

BALANCING PAD: NOT INCLUDED

•

MOUNTING HOLE SPACING: EQUALLY SPACED ON 2-7/8 IN. BOLT CIRCLE IN

•

BRAKING SURFACE WIDTH: 1.620 INCHES NOMINAL IN

•

INSPECTION HOLE: NOT INCLUDED

•

MOUNTING HOLE DIAMETER: 0.401 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

MOUNTING HOLE QUANTITY	4
ADJUSTMENT HOLE	NOT INCLUDED
BALANCING PAD	NOT INCLUDED
MOUNTING HOLE SPACING	EQUALLY SPACED ON 2-7/8 IN. BOLT CIRCLE IN
BRAKING SURFACE WIDTH	1.620 INCHES NOMINAL IN
INSPECTION HOLE	NOT INCLUDED
MOUNTING HOLE DIAMETER	0.401 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN
OVERALL WIDTH	2.055 INCHES MINIMUM AND 2.085 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER	10.435 INCHES MINIMUM AND 10.465 INCHES MAXIMUM IN
BRAKING SURFACE LOCATION	INTERNAL

OTHER ITEMS IN FSC 2530 — Vehicular Brake, Steering, Axle, Wheel, and Track Components

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

2530-00-003-5229 2530-00-139-4058 2530-00-363-4183 2530-00-478-5792 2530-00-496-2927 2530-00-701-0656 2530-00-734-2546 2530-01-171-5122

SUBSTITUTES & CROSS-REFERENCES 2

3719V178Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

D47527Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 6778191?

6778191 is a BRAKE DRUM.

What parts can replace 6778191?

There are 2 known substitutes for 6778191: 3719V178, D47527. Substitute compatibility should be verified for your specific system.

What is the NSN for 6778191?

6778191 is cataloged in the U.S. Government catalog under NSN 2530-00-080-6778. This indicates validated use in U.S. government and defense supply chains.

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6778191 — BRAKE DRUM

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