| Item Name | Plate Mounting |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5340 Hardware Commercial |
| National Item Identification Number (NIIN) | 01-455-3139 (014553139) |
| NCB Code | USA (01) |
| Manufacturer | Si International Inc, Northrop Grumman Space And Mission Systems Corp |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAWY | COUNTERBORE DIAMETER | 1.100 INCHES NOMINAL |
| AAWZ | COUNTERBORE DEPTH | 0.380 INCHES NOMINAL |
| ABGL | WIDTH | 3.040 INCHES NOMINAL |
| ABNM | THICKNESS | 0.500 INCHES NOMINAL |
| ABRY | LENGTH | 5.000 INCHES NOMINAL |
| ABTB | MOUNTING HOLE DIAMETER | 0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM ALL HOLES |
| ABTJ | MOUNTING HOLE QUANTITY | 6 |
| ABVL | APERTURE DIAMETER | 0.515 INCHES NOMINAL |
| AGAV | END ITEM IDENTIFICATION | T.O. 31S9-4-99-1. APPLICATION AN/USQ-139 |
| CKSN | RAISED SURFACE LENGTH | 5.000 INCHES NOMINAL |
| CKSQ | RAISED SURFACE WIDTH | 2.750 INCHES NOMINAL |
| CKSR | RAISED SURFACE HEIGHT | 0.320 INCHES NOMINAL |
| CKSX | APERTURE SHAPE | ROUND |
| CKTB | APERTURE TYPE | COUNTERBORED |
| FEAT | SPECIAL FEATURES | INCLUDES SIX BRASS INSERTS, 10-32, P/N PPB-032-2 FOR MOUNTING HOLES;REQUESTED NAME-ADAPTER, SOUTHWEST PLATE ASSEMBLY |
| MATT | MATERIAL | PLASTIC |
| SHPE | SHAPE | RECTANGULAR |
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