| Item Name | Bolt Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 01-143-2814 (011432814) |
| NCB Code | USA (01) |
| Manufacturer | The Boeing Company, Sonic Industries Inc, Heartland Precision Fasteners Inc, Hi Shear Corporation, Sps Technologies Ltd, Huck International Inc, Lisi Aerospace, Emhart Teknologies Inc, Alcoa Global Fasteners Inc, Valley Todeco Inc |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| ST3M497-4D26 | the boeing company | bolt shoulder | RFQ |
| S11-1061-4D26 | sonic industries inc | bolt shoulder | RFQ |
| HP5497-4D26 | heartland precision fasteners inc | bolt shoulder | RFQ |
| MB88-4D26 | hi shear corporation | bolt shoulder | RFQ |
| 109450-4D26 | sps technologies ltd | bolt shoulder | RFQ |
| PBF1254-4D26 | sps technologies ltd | bolt shoulder | RFQ |
| BM17019-4D26X | huck international inc | bolt shoulder | RFQ |
| MB88-4D26 | lisi aerospace | bolt shoulder | RFQ |
| ST3M497-4D26 | emhart teknologies inc | bolt shoulder | RFQ |
| VS3037-4D26 | alcoa global fasteners inc | bolt shoulder | RFQ |
| VAL23607-4D26 | valley todeco inc | bolt shoulder | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 2.006 INCHES MINIMUM AND 2.053 INCHES MAXIMUM |
| AASK | HEAD STYLE | DOUBLE HEXAGON |
| AASU | HEAD HEIGHT | 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.439 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.2646 INCHES MINIMUM FIRST SHOULDER AND 0.2651 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 1.615 INCHES MINIMUM FIRST SHOULDER AND 1.635 INCHES MAXIMUM FIRST SHOULDER |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM FIRST HOLE AND 0.081 INCHES MAXIMUM FIRST HOLE |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.885 INCHES MINIMUM FIRST HOLE AND 1.942 INCHES MAXIMUM FIRST HOLE |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| MATT | MATERIAL | STEEL COMP XM-13 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| Relevant Components for NSN - 5306-01-143-2814, 5306011432814 | ||||
| 5365-99-998-9980 (5365999989980) | 5365-99-998-9265 (5365999989265) | 5365-99-997-1598 (5365999971598) | 5365-99-996-9236 (5365999969236) | |
| 5365-99-994-0353 (5365999940353) | 5365-99-994-0176 (5365999940176) | 5365-99-992-1527 (5365999921527) | 5365-99-990-8469 (5365999908469) | |
| 5365-99-989-0900 (5365999890900) | 5365-99-987-5556 (5365999875556) | 5365-99-983-0520 (5365999830520) | 5365-99-979-8712 (5365999798712) | |
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