| Item Name | Brakedrum |
| Federal Supply Group (FSG) | Vehicular Equipment Components |
| Federal Supply Class (FSC) | 2530 Vehicular Brake Steering Axle Wheel and Track Components |
| National Item Identification Number (NIIN) | 00-401-8144 (004018144) |
| NCB Code | USA (00) |
| Manufacturer | Meritor Heavy Vehicle Braking System |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABMK | OVERALL WIDTH | 10.620 INCHES NOMINAL |
| ABQS | COUNTERSUNK HOLE ANGLE IN DEG | 82.0 |
| ABTB | MOUNTING HOLE DIAMETER | 1.250 INCHES NOMINAL |
| ABTJ | MOUNTING HOLE QUANTITY | 10 |
| ADGA | OVERALL OUTSIDE DIAMETER | 18.620 INCHES NOMINAL |
| ADYT | CENTER HOLE DIAMETER | 9.437 INCHES MINIMUM AND 9.440 INCHES MAXIMUM |
| AGAV | END ITEM IDENTIFICATION | HARNISCHAFEGER CORPL;MODEL M320T2,CRANE TRUCK MOUNTED,NSNS 3810-00-151-4431 |
| AJVW | ALIGNMENT HOLE QUANTITY | 5 |
| ALXY | MOUNTING HOLE SPACING | EQUALLY SPACED ON 11.246 IN. MIN,11.254 IN. MAX BOLT CIRCLE |
| ANNQ | MATERIAL AND LOCATION | IRON,CAST OVERALL |
| AYPQ | BRAKING SURFACE LOCATION | INTERNAL |
| AYQA | BRAKING SURFACE DIAMETER | 16.495 INCHES MINIMUM AND 16.505 INCHES MAXIMUM |
| AYQB | BRAKING SURFACE WIDTH | 7.440 INCHES NOMINAL |
| AYQC | HOLE SIZE | 0.531 IN. DIA |
| AYQE | HOLE SPACING | EQUALLY SPACED ON 11.246 IN. MIN,11.254 IN. MAX BOLT CIRCLE |
| AYQF | COOLING FIN | NOT INCLUDED |
| AYQH | ADJUSTMENT HOLE | NOT INCLUDED |
| AYQJ | INSPECTION HOLE | INCLUDED |
| AYQK | OIL DRAIN HOLE | NOT INCLUDED |
| AYQL | BALANCING PAD | NOT INCLUDED |
| Components Related to NSN - 2530-00-401-8144, 2530004018144 | ||||
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| 2540-12-178-0487 (2540121780487) | 2590-01-586-3027 (2590015863027) | 2540-01-573-7636 (2540015737636) | 2530-01-370-6077 (2530013706077) | |
| 2520-01-006-7118 (2520010067118) | 2540-01-672-4339 (2540016724339) | 2520-00-673-8163 (2520006738163) | 2520-01-193-7541 (2520011937541) | |
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