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) | 00-307-4178 (003074178) |
| NCB Code | USA (00) |
| Manufacturer | Sikorsky Aircraft Corporation, National Aerospace Standards Com, Military Standards Corp |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| SS27576-6-122 | sikorsky aircraft corporation | bolt close tolerance | RFQ |
| MS27576-6-122 | national aerospace standards com | bolt close tolerance | RFQ |
| MS27576-6-122 | military standards corp | bolt close tolerance | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.357 INCHES MINIMUM AND 0.439 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 8.164 INCHES MINIMUM AND 8.184 INCHES MAXIMUM |
| AASK | HEAD STYLE | DISHED HEXAGON |
| AASU | HEAD HEIGHT | 0.189 INCHES MINIMUM AND 0.204 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM |
| AAUM | LOCKING FEATURE | DETENT RING GRIP |
| AAUR | GRIP DIAMETER | 0.3733 INCHES MINIMUM AND 0.3742 INCHES MAXIMUM |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE |
| AHYM | NOMINAL THREAD DIAMETER | 0.375 INCHES |
| ANEE | GRIP LENGTH | 7.625 INCHES MINIMUM AND 7.641 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| CQBC | MINIMUM TENSILE STRENGTH | 95000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM OVERALL |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 8.049 INCHES MINIMUM AND 8.079 INCHES MAXIMUM FIRST HOLE |
| CSYM | SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
| CSYM | SURFACE FINISH | 63.0 MICROINCHES GRIP |
| MATT | MATERIAL | STEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 4130 OR STEEL COMP 6150 OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| Relevant Components for NSN - 5306-00-307-4178, 5306003074178 | ||||
| 5365-00-981-3580 (5365009813580) | 5306-01-663-0372 (5306016630372) | 5330-00-259-1415 (5330002591415) | 5340-00-140-8006 (5340001408006) | |
| 5310-01-055-6080 (5310010556080) | 5340-01-571-9066 (5340015719066) | 5360-01-528-5575 (5360015285575) | 5340-01-254-4525 (5340012544525) | |
| 5310-01-456-0920 (5310014560920) | 5331-01-311-6975 (5331013116975) | 5330-00-147-6676 (5330001476676) | 5365-01-201-0770 (5365012010770) | |
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