The BRAKE DRUM is a the manufacturer industrial component. Key specifications include center_hole_diameter: 4.601 INCHES NOMINAL IN, braking_surface_width: 3.000 INCHES NOMINAL IN, mounting_hole_spacing: EQUALLY SPACED ON 6 IN. BOLT CIRCLE IN, mounting_hole_diameter: 0.516 INCHES NOMINAL IN, braking_surface_diameter: 14.007 INCHES NOMINAL IN, braking_surface_location: INTERNAL.
This part is cataloged in the U.S. Government catalog under NSN 2530-01-180-8558, 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
3990030
NSN:2530-01-180-8558 FSC:2530 — Vehicular Brake, Steering, Axle, Wheel, and Track Components CAGE:7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
center_hole_diameter
4.601 INCHES NOMINAL IN
braking_surface_width
3.000 INCHES NOMINAL IN
mounting_hole_spacing
EQUALLY SPACED ON 6 IN. BOLT CIRCLE IN
mounting_hole_diameter
0.516 INCHES NOMINAL IN
mounting_hole_quantity
6
braking_surface_diameter
14.007 INCHES NOMINAL IN
braking_surface_location
INTERNAL
NSN
2530-01-180-8558
COMPONENT DIAGRAM
KEY FEATURES
•
MOUNTING HOLE QUANTITY: 6
•
MOUNTING HOLE SPACING: EQUALLY SPACED ON 6 IN. BOLT CIRCLE IN
•
BRAKING SURFACE WIDTH: 3.000 INCHES NOMINAL IN
•
MOUNTING HOLE DIAMETER: 0.516 INCHES NOMINAL IN
•
BRAKING SURFACE LOCATION: INTERNAL
•
CENTER HOLE DIAMETER: 4.601 INCHES NOMINAL IN
•
BRAKING SURFACE DIAMETER: 14.007 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY
6
MOUNTING HOLE SPACING
EQUALLY SPACED ON 6 IN. BOLT CIRCLE IN
BRAKING SURFACE WIDTH
3.000 INCHES NOMINAL IN
MOUNTING HOLE DIAMETER
0.516 INCHES NOMINAL IN
BRAKING SURFACE LOCATION
INTERNAL
CENTER HOLE DIAMETER
4.601 INCHES NOMINAL IN
BRAKING SURFACE DIAMETER
14.007 INCHES NOMINAL IN
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.
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FREQUENTLY ASKED QUESTIONS
What is 3990030?
3990030 is a BRAKE DRUM.
What is the NSN for 3990030?
3990030 is cataloged in the U.S. Government catalog under NSN 2530-01-180-8558. This indicates validated use in U.S. government and defense supply chains.
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