| Item Name | Bolt Externally Relieved Body |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 00-303-7952 (003037952) |
| NCB Code | USA (00) |
| Manufacturer | Dresser Industries Inc, Aqua Chem Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.688 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 2.188 INCHES NOMINAL |
| AASK | HEAD STYLE | DEE CHAMFER |
| AASL | HEAD DIAMETER | 0.625 INCHES NOMINAL |
| AASU | HEAD HEIGHT | 0.250 INCHES NOMINAL |
| AASY | DISTANCE FROM CENTERLINE TO FLAT | 0.208 INCHES MINIMUM AND 0.218 INCHES MAXIMUM |
| AAWC | FIRST DIAMETER FROM HEAD | 0.335 INCHES NOMINAL |
| AAWD | SECOND DIAMETER FROM HEAD | 0.374 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| AAWE | THIRD DIAMETER FROM HEAD | 0.324 INCHES NOMINAL |
| AAWH | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.094 INCHES NOMINAL |
| AAWJ | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 1.063 INCHES NOMINAL |
| AAWK | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 1.500 INCHES NOMINAL |
| AHYM | NOMINAL THREAD DIAMETER | 0.375 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| CQFM | HARDNESS RATING | 25.0 ROCKWELL C MINIMUM OVERALL AND 37.0 ROCKWELL C MAXIMUM OVERALL |
| CSNG | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 3 |
| MATT | MATERIAL | STEEL COMP 3135 OVERALL OR STEEL COMP 4140 OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Relevant Components for NSN - 5306-00-303-7952, 5306003037952 | ||||
| 5320-01-318-6843 (5320013186843) | 5340-01-557-4760 (5340015574760) | 5340-00-336-3776 (5340003363776) | 5340-01-560-8528 (5340015608528) | |
| 5330-01-684-2979 (5330016842979) | 5310-01-185-8686 (5310011858686) | 5360-00-394-4491 (5360003944491) | 5320-01-267-6376 (5320012676376) | |
| 5315-00-432-8021 (5315004328021) | 5315-01-271-9296 (5315012719296) | 5340-01-353-1927 (5340013531927) | 5320-01-413-1816 (5320014131816) | |
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