AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Bolt Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 01-021-1872 (010211872) |
| NCB Code | USA (01) |
| Manufacturer | Avibank Mfg Inc, National Aerospace Standards Com, Alcoa Global Fasteners Inc, Sps Technologies Inc, Military Standards Corp |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| AS194-4-55 | avibank mfg inc | bolt close tolerance | RFQ |
| MS27576-4-56 | national aerospace standards com | bolt close tolerance | RFQ |
| CA4510-4-56 | alcoa global fasteners inc | bolt close tolerance | RFQ |
| 106467-4-56 | sps technologies inc | bolt close tolerance | RFQ |
| CA4510-4-55 | alcoa global fasteners inc | bolt close tolerance | RFQ |
| A194-4-56 | avibank mfg inc | bolt close tolerance | RFQ |
| 106467-4-55 | sps technologies inc | bolt close tolerance | RFQ |
| MS27576-4-55 | military standards corp | bolt close tolerance | RFQ |
| MS27576-4-56 | military standards corp | bolt close tolerance | RFQ |
| MS27576-4-55 | national aerospace standards com | bolt close tolerance | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.282 INCHES MINIMUM AND 0.333 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 3.918 INCHES MINIMUM AND 3.938 INCHES MAXIMUM |
| AASK | HEAD STYLE | DISHED HEXAGON |
| AASU | HEAD HEIGHT | 0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM |
| AAUR | GRIP DIAMETER | 0.2483 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM FIRST HOLE AND 0.086 INCHES MAXIMUM FIRST HOLE |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| ANEE | GRIP LENGTH | 3.500 INCHES MINIMUM AND 3.516 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQBC | MINIMUM TENSILE STRENGTH | 95000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM OVERALL AND 41.0 ROCKWELL C MAXIMUM OVERALL |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.818 INCHES MINIMUM FIRST HOLE AND 3.848 INCHES MAXIMUM FIRST HOLE |
| CSYM | SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
| CSYM | SURFACE FINISH | 63.0 MICROINCHES GRIP |
| FEAT | SPECIAL FEATURES | RETAINING ELEMENT IN SHANK |
| MATT | MATERIAL | STEEL COMP E4340 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 4130 OVERALL OR STEEL COMP 6150 OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| Relevant Components for NSN - 5306-01-021-1872, 5306010211872 | ||||
| 5305-01-642-0405 (5305016420405) | 5340-01-469-1045 (5340014691045) | 5315-01-562-5736 (5315015625736) | 5315-01-575-7397 (5315015757397) | |
| 5310-00-347-0214 (5310003470214) | 5320-01-073-2961 (5320010732961) | 5342-01-117-9590 (5342011179590) | 5355-00-201-5369 (5355002015369) | |
| 5305-01-321-3806 (5305013213806) | 5330-00-256-6918 (5330002566918) | 5365-01-625-0045 (5365016250045) | 5310-01-593-4780 (5310015934780) | |
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