| Item Name | Bolt Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 00-194-1663 (001941663) |
| NCB Code | USA (00) |
| Manufacturer | British Standards Institution |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.720 INCHES MINIMUM AND 0.890 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 3.850 INCHES MINIMUM AND 3.890 INCHES MAXIMUM |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.679 INCHES MINIMUM AND 0.688 INCHES MAXIMUM |
| AAUR | GRIP DIAMETER | 0.4368 INCHES MINIMUM AND 0.4373 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.438 INCHES |
| ANEE | GRIP LENGTH | 3.000 INCHES MINIMUM AND 3.130 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| FEAT | SPECIAL FEATURES | IDENTIFICATION DISK ON TOP OF HEAD 0.670 IN. DIA,0.030 IN. DEPTH |
| MATT | MATERIAL | STEEL OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | A.111,FSCM K7766 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Relevant Components for NSN - 5306-00-194-1663, 5306001941663 | ||||
| 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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