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9977320 — BRAKE DRUM

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

9977320: BRAKE DRUM.

The BRAKE DRUM is a the manufacturer industrial component. Key specifications include material: IRON CAST OVERALL, cooling_fin: NOT INCLUDED, balancing_pad: NOT INCLUDED, overall_width: 5.750 INCHES NOMINAL IN, oil_drain_hole: NOT INCLUDED, inspection_hole: INCLUDED. This part is cataloged in the U.S.

Government catalog under NSN 3040-00-019-5175, 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
9977320
NSN: 3040-00-019-5175
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialIRON CAST OVERALL
cooling_finNOT INCLUDED
balancing_padNOT INCLUDED
overall_width5.750 INCHES NOMINAL IN
oil_drain_holeNOT INCLUDED
inspection_holeINCLUDED
center_hole_diameter9.000 INCHES MINIMUM AND 9.005 INCHES MAXIMUM IN
braking_surface_width4.688 INCHES NOMINAL IN
mounting_hole_spacingEQUALLY SPACED ON 10.500 IN. BOLT CIRCLE IN
mounting_hole_diameter0.516 INCHES NOMINAL IN
mounting_hole_quantity6
braking_surface_diameter15.000 INCHES MINIMUM AND 15.010 INCHES MAXIMUM IN
NSN3040-00-019-5175
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BRAKE DRUM TITLE COMPONENT PN 9977320 MFR BRAKE DRUM
KEY FEATURES
•
MOUNTING HOLE QUANTITY: 6
•
BALANCING PAD: NOT INCLUDED
•
MOUNTING HOLE SPACING: EQUALLY SPACED ON 10.500 IN. BOLT CIRCLE IN
•
BRAKING SURFACE WIDTH: 4.688 INCHES NOMINAL IN
•
INSPECTION HOLE: INCLUDED
•
MOUNTING HOLE DIAMETER: 0.516 INCHES NOMINAL IN
•
OVERALL OUTSIDE DIAMETER: 16.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY6
BALANCING PADNOT INCLUDED
MOUNTING HOLE SPACINGEQUALLY SPACED ON 10.500 IN. BOLT CIRCLE IN
BRAKING SURFACE WIDTH4.688 INCHES NOMINAL IN
INSPECTION HOLEINCLUDED
MOUNTING HOLE DIAMETER0.516 INCHES NOMINAL IN
OVERALL WIDTH5.750 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER16.500 INCHES NOMINAL IN
BRAKING SURFACE LOCATIONINTERNAL
OIL DRAIN HOLENOT INCLUDED
OTHER ITEMS IN FSC 3040 — Miscellaneous Power Transmission Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3040-00-001-0046 3040-00-001-0047 3040-00-001-0048 3040-00-001-0068 3040-00-001-0077 3040-00-001-0078 3040-00-001-0089 3040-00-001-1224
SUBSTITUTES & CROSS-REFERENCES 1
1913Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9977320?
9977320 is a BRAKE DRUM.
What parts can replace 9977320?
There is 1 known substitute for 9977320: 1913. Substitute compatibility should be verified for your specific system.
What is the NSN for 9977320?
9977320 is cataloged in the U.S. Government catalog under NSN 3040-00-019-5175. 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.