| Item Name | Bolt Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 01-281-7801 (012817801) |
| NCB Code | USA (01) |
| Manufacturer | General Dynamics Land Systems Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 1.375 INCHES NOMINAL |
| AASB | FASTENER LENGTH | 4.250 INCHES NOMINAL |
| AASK | HEAD STYLE | SQUARE |
| AASU | HEAD HEIGHT | 2.250 INCHES NOMINAL |
| AATB | WIDTH BETWEEN FLATS | 0.907 INCHES MINIMUM AND 0.938 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.500 INCHES MINIMUM FIRST SHOULDER AND 0.562 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 1.250 INCHES NOMINAL FIRST SHOULDER |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.219 INCHES MINIMUM FIRST HOLE AND 0.235 INCHES MAXIMUM FIRST HOLE |
| AHYM | NOMINAL THREAD DIAMETER | 0.500 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 13 |
| CQFM | HARDNESS RATING | 33.0 ROCKWELL C MINIMUM GRIP AND 38.0 ROCKWELL C MAXIMUM GRIP |
| CQFM | HARDNESS RATING | 33.0 ROCKWELL C MINIMUM THREADS AND 38.0 ROCKWELL C MAXIMUM THREADS |
| CQFM | HARDNESS RATING | 43.0 ROCKWELL C MINIMUM HEAD AND 48.0 ROCKWELL C MAXIMUM HEAD |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 4.000 INCHES NOMINAL FIRST HOLE |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| FEAT | SPECIAL FEATURES | HEAD SLANTED 45 DEGREES; ROCKWELL C HARDENED 1.250 IN. MIN. TO 1.750 IN. MAX ON HEAD |
| MATT | MATERIAL | STEEL COMP 4140H OVERALL OR STEEL COMP 4142H OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| Relevant Components for NSN - 5306-01-281-7801, 5306012817801 | ||||
| 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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