AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Bolt Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 00-522-1486 (005221486) |
| NCB Code | USA (00) |
| Manufacturer | Sps Technologies Inc, United Technologies Corporation, Alcoa Global Fasteners Inc, Mnr Tool Engineering Inc, Textron Fastening Systems Ltd, Necchi Spa |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| 276351 | sps technologies inc | bolt shoulder | RFQ |
| 276351 | united technologies corporation | bolt shoulder | RFQ |
| 276351 | alcoa global fasteners inc | bolt shoulder | RFQ |
| 276351 | mnr tool engineering inc | bolt shoulder | RFQ |
| 276351 | textron fastening systems ltd | bolt shoulder | RFQ |
| 276351 | necchi spa | bolt shoulder | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 1.658 INCHES MINIMUM AND 1.708 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 2.178 INCHES MINIMUM AND 2.198 INCHES MAXIMUM |
| AASK | HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| AASU | HEAD HEIGHT | 0.272 INCHES MINIMUM AND 0.292 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.300 INCHES MINIMUM AND 0.315 INCHES MAXIMUM |
| AATC | EXTENDED WASHER DIAMETER | 0.465 INCHES MINIMUM AND 0.485 INCHES MAXIMUM |
| AATD | EXTENDED WASHER THICKNESS | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.311 INCHES NOMINAL FIRST SHOULDER |
| AATN | SHOULDER DIAMETER | 0.312 INCHES NOMINAL SECOND SHOULDER |
| AATX | SHOULDER LENGTH | 0.150 INCHES NOMINAL SECOND SHOULDER |
| AATX | SHOULDER LENGTH | 0.175 INCHES NOMINAL FIRST SHOULDER |
| AAUB | HOLE DIAMETER | 0.070 INCHES NOMINAL |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| ASXK | HOLE QUANTITY | 4 |
| BQDM | HOLE TYPE | DRILLED |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQFM | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| CRHC | HOLE CONFIGURATION STYLE | DOUBLE HEXAGON LONGITUDINAL HOLE |
| CRTL | CRITICALITY CODE JUSTIFICATION | SUPP |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| FEAT | SPECIAL FEATURES | SHOULDER FURTHEREST FROM HEAD THREADED 0.312-32 BY 3A FIT |
| MATT | MATERIAL | STEEL COMP 8740 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SUPP | SUPPLEMENTARY FEATURES | FAILURE COULD CAUSE CATASTROPHIC OR CRITICAL FAILURE RESULTING IN THE LOSS OF OR SERIOUS DAMAGE TO THE AIRCRAFT. WPN SYS OR UNCOMMANDED ENGINE SHUTDOWN |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Relevant Components for NSN - 5306-00-522-1486, 5306005221486 | ||||
| 5305-00-151-0390 (5305001510390) | 5305-00-162-0212 (5305001620212) | 5330-01-021-6193 (5330010216193) | 5306-01-667-2305 (5306016672305) | |
| 5305-00-702-7578 (5305007027578) | 5306-01-467-0619 (5306014670619) | 5340-14-507-0973 (5340145070973) | 5330-01-545-5049 (5330015455049) | |
| 5331-01-433-9967 (5331014339967) | 5330-01-176-0563 (5330011760563) | 5330-20-001-0516 (5330200010516) | 5305-00-550-9932 (5305005509932) | |
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