| Item Name | Bolt Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 00-021-4923 (000214923) |
| NCB Code | USA (00) |
| Manufacturer | Sps Technologies Inc, Alcoa Global Fasteners Inc, United Technologies Corporation, Valad Electric Heating Corp |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.288 INCHES MINIMUM AND 0.318 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 1.905 INCHES MINIMUM AND 1.925 INCHES MAXIMUM |
| AASK | HEAD STYLE | TEE NO. 6 |
| AASU | HEAD HEIGHT | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| AASV | HEAD LENGTH | 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.550 INCHES MINIMUM AND 0.560 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.452 INCHES MINIMUM FIRST SHOULDER AND 0.453 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 1.431 INCHES MINIMUM FIRST SHOULDER AND 1.440 INCHES MAXIMUM FIRST SHOULDER |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.065 INCHES MINIMUM FIRST HOLE AND 0.072 INCHES MAXIMUM FIRST HOLE |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQFM | HARDNESS RATING | 35.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.525 INCHES MINIMUM FIRST HOLE AND 1.565 INCHES MAXIMUM FIRST HOLE |
| CSYT | CHAMFER ANGLE | 43.0 DEGREES MINIMUM AND 47.0 DEGREES MAXIMUM |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| MATT | MATERIAL | STEEL COMP 615 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 7470 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| Components Related to NSN - 5306-00-021-4923, 5306000214923 | ||||
| 5306-00-660-3288 (5306006603288) | 5340-01-138-8180 (5340011388180) | 5330-01-323-8411 (5330013238411) | 5360-01-204-0090 (5360012040090) | |
| 5307-00-612-4110 (5307006124110) | 5340-01-482-4141 (5340014824141) | 5310-01-062-0524 (5310010620524) | 5340-01-597-2720 (5340015972720) | |
| 5325-99-120-1207 (5325991201207) | 5315-01-696-7898 (5315016967898) | 5340-01-137-3603 (5340011373603) | 5355-01-379-0440 (5355013790440) | |
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