| Item Name | Bolt Ribbed Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 01-181-8009 (011818009) |
| NCB Code | USA (01) |
| Manufacturer | Rolls Royce Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.840 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 1.330 INCHES MINIMUM AND 1.360 INCHES MAXIMUM |
| AASK | HEAD STYLE | DEE CHAMFER |
| AASL | HEAD DIAMETER | 0.624 INCHES NOMINAL |
| AASU | HEAD HEIGHT | 0.188 INCHES NOMINAL |
| AASY | DISTANCE FROM CENTERLINE TO FLAT | 0.166 INCHES NOMINAL |
| AATN | SHOULDER DIAMETER | 0.317 INCHES MINIMUM FIRST SHOULDER AND 0.321 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.260 INCHES NOMINAL FIRST SHOULDER |
| AAVP | RIB MAJOR DIAMETER | 0.321 INCHES NOMINAL |
| AAVQ | RIB LENGTH | 0.260 INCHES NOMINAL |
| AAVR | DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.030 INCHES MINIMUM AND 0.090 INCHES MAXIMUM |
| AAVT | RIB MINOR DIAMETER | 0.317 INCHES NOMINAL |
| AAVU | RIB QUANTITY | 33 |
| AHYM | NOMINAL THREAD DIAMETER | 0.312 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| CQFM | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM OVERALL AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| CRKB | RIB INCLUDED ANGLE | 85.0 DEGREES NOMINAL |
| CWYB | SHOULDER SHAPE | RIBBED FIRST SHOULDER |
| FEAT | SPECIAL FEATURES | HEAD COLOR WITH YELLOW MARKING INK |
| MATT | MATERIAL | STEEL COMP 1335 OVERALL OR STEEL COMP 1541 OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNRF |
| Relevant Components for NSN - 5306-01-181-8009, 5306011818009 | ||||
| 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) | |
If You’re Ever Looking for NSN parts Or Have an Aircraft On Ground Situation, Don’t forget That We offer Competitive Pricing and Guaranteed On-Time Delivery.
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