| Item Name | Bolt Ribbed Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 01-421-3186 (014213186) |
| NCB Code | USA (01) |
| Manufacturer | Webb Wheel Products Inc, Caterpillar Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AHYM | Nominal Thread Diameter | 22.0 MILLIMETERS |
| AASL | Head Diameter | 33.27 MILLIMETERS NOMINAL |
| CQWR | External Thread Tolerance Class | 6G |
| AATX | Shoulder Length | 18.3 MILLIMETERS NOMINAL FIRST SHOULDER |
| AASK | Head Style | FLAT CHAMFER |
| CWYB | Shoulder Shape | ROUND FIRST SHOULDER |
| THSD | Thread Series Designator | M |
| AASB | Fastener Length | 88.9 MILLIMETERS NOMINAL |
| AATN | Shoulder Diameter | 25.58 MILLIMETERS NOMINAL FIRST SHOULDER |
| CMLP | Thread Quantity Per Inch | 1.5 |
| MRC | Decoded Requirement | Clear Text Reply |
| AASA | Thread Length | 57.2 MILLIMETERS NOMINAL |
| Relevant Components for NSN - 5306-01-421-3186, 5306014213186 | ||||
| 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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