| Item Name | Bolt Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 00-661-2093 (006612093) |
| NCB Code | USA (00) |
| Manufacturer | Fairbanks Morse Llc, Coltec Industries Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 1.062 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 2.500 INCHES NOMINAL |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.469 INCHES NOMINAL |
| AATB | WIDTH BETWEEN FLATS | 1.000 INCHES NOMINAL |
| AAUR | GRIP DIAMETER | 0.6200 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.625 INCHES |
| ANEE | GRIP LENGTH | 1.438 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 18 |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES GRIP |
| MATT | MATERIAL | STEEL COMP 1117 OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| TEST | TEST DATA DOCUMENT | 21387-NAFB4754K1 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS,INDIVIDUAL MANUFACTUREER STANDARDS,ETC.). |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Relevant Components for NSN - 5306-00-661-2093, 5306006612093 | ||||
| 5320-01-093-5687 (5320010935687) | 5340-00-286-8500 (5340002868500) | 5310-00-797-4430 (5310007974430) | 5331-01-548-6940 (5331015486940) | |
| 5340-01-389-2408 (5340013892408) | 5340-01-499-3481 (5340014993481) | 5310-01-418-9739 (5310014189739) | 5320-01-419-8697 (5320014198697) | |
| 5340-01-681-6722 (5340016816722) | 5340-01-620-4639 (5340016204639) | 5340-01-481-2087 (5340014812087) | 5331-01-097-0869 (5331010970869) | |
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