AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Brake Drum |
| 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) | 00-770-5745 (007705745) |
| NCB Code | USA (00) |
| Manufacturer | Daimler Chrysler, Allied Signal Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABMK | OVERALL WIDTH | 7.875 INCHES NOMINAL |
| ABTB | MOUNTING HOLE DIAMETER | 0.938 INCHES NOMINAL |
| ADGA | OVERALL OUTSIDE DIAMETER | 15.875 INCHES NOMINAL |
| AYQE | HOLE SPACING | 1 HOLE OPPOSITE AND ON CENTER LINE OF A MTG HOLE,2 HOLES SPACED 36 DEG TO RIGHT AND LEFT OF SAME MTG HOLE,ALL ON MTG HOLE BOLT CIRCLE |
| AYQJ | INSPECTION HOLE | NOT INCLUDED |
| AYQL | BALANCING PAD | INCLUDED |
| ABQS | COUNTERSUNK HOLE ANGLE IN DEG | 82.0 |
| ABTJ | MOUNTING HOLE QUANTITY | 5 |
| ADYT | CENTER HOLE DIAMETER | 4.877 INCHES MINIMUM AND 4.881 INCHES MAXIMUM |
| AJVW | ALIGNMENT HOLE QUANTITY | 3 |
| ALXY | MOUNTING HOLE SPACING | EQUALLY SPACED ON 6.872 IN. MIN,6.878 IN. MAX BOLT CIRCLE |
| ANNQ | MATERIAL AND LOCATION | STEEL OVERALL |
| AYPQ | BRAKING SURFACE LOCATION | INTERNAL |
| AYQA | BRAKING SURFACE DIAMETER | 14.155 INCHES MINIMUM AND 14.165 INCHES MAXIMUM |
| AYQB | BRAKING SURFACE WIDTH | 2.281 INCHES MINIMUM AND 2.313 INCHES MAXIMUM |
| AYQC | HOLE SIZE | 0.406 IN. DIA |
| AYQF | COOLING FIN | NOT INCLUDED |
| AYQH | ADJUSTMENT HOLE | NOT INCLUDED |
| AYQK | OIL DRAIN HOLE | NOT INCLUDED |
| Relevant Components for NSN - 2530-00-770-5745, 2530007705745 | ||||
| 2520-01-374-4314 (2520013744314) | 2520-00-301-3598 (2520003013598) | 2510-01-067-5566 (2510010675566) | 2540-01-570-9662 (2540015709662) | |
| 2510-00-741-5717 (2510007415717) | 2520-01-237-0848 (2520012370848) | 2590-01-608-5354 (2590016085354) | 2590-01-297-9206 (2590012979206) | |
| 2590-01-576-1154 (2590015761154) | 2540-01-549-7638 (2540015497638) | 2530-01-175-7721 (2530011757721) | 2530-00-675-4278 (2530006754278) | |
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