| Item Name | Bolt Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 01-521-2051 (015212051) |
| NCB Code | USA (01) |
| Manufacturer | National Aerospace Standards Com |
| MRC | Criteria | Characteristic |
|---|---|---|
| CRSQ | Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| CQBC | Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH |
| AAJD | Thread Class | 3A |
| MRC | Decoded Requirement | Clear Text Reply |
| AASK | Head Style | FLAT COUNTERSUNK |
| AHYM | Nominal Thread Diameter | 0.190 INCHES |
| CMLP | Thread Quantity Per Inch | 32 |
| AASA | Thread Length | 0.323 INCHES NOMINAL |
| AASB | Fastener Length | 0.823 INCHES NOMINAL |
| AASL | Head Diameter | 0.338 INCHES MINIMUM AND 0.381 INCHES MAXIMUM |
| MDCL | Material Document And Classification | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 5853 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | Surface Treatment | CADMIUM OVERALL |
| ANEE | Grip Length | 0.500 INCHES NOMINAL |
| STDC | Surface Treatment Document And Classification | QQ-P-416, TYII, CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | Thread Series Designator | UNJF |
| AAUR | Grip Diameter | 0.188 INCHES MINIMUM AND 0.189 INCHES MAXIMUM |
| MATT | Material | IRON ALLOY 660 OVERALL |
| AAJF | Thread Direction | RIGHT-HAND |
| ZZZK | Specification/Standard Data | 80205-NAS7503 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Relevant Components for NSN - 5306-01-521-2051, 5306015212051 | ||||
| 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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