| Item Name | Bolt Shoulder |
| INC Code | 04905 |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 00-638-7987 (006387987) |
| NCB Code | USA (00) |
| Manufacturer | Lockheed Martin Corporation, The Okonite Company |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.532 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 4.813 INCHES NOMINAL |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.312 INCHES NOMINAL |
| AATB | WIDTH BETWEEN FLATS | 0.875 INCHES NOMINAL |
| AATN | SHOULDER DIAMETER | 0.623 INCHES NOMINAL SECOND SHOULDER |
| AATN | SHOULDER DIAMETER | 0.749 INCHES NOMINAL FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 1.875 INCHES NOMINAL FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 2.250 INCHES NOMINAL SECOND SHOULDER |
| AHYM | NOMINAL THREAD DIAMETER | 0.500 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 13 |
| CWYB | SHOULDER SHAPE | ROUND ALL SHOULDERS |
| FEAT | SPECIAL FEATURES | UNDERCUT BETWEEN SECOND SHOULDER AND THD 0.393 IN. DIA BY 0.156 IN. WIDE |
| MATT | MATERIAL | STEEL COMP 416 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| Relevant Components for NSN - 5306-00-638-7987, 5306006387987 | ||||
| 5306-01-044-6542 (5306010446542) | 5306-00-638-3143 (5306006383143) | 5306-01-599-7864 (5306015997864) | 5306-01-580-9186 (5306015809186) | |
| 5306-00-836-0237 (5306008360237) | 5306-00-490-4588 (5306004904588) | 5306-00-515-7096 (5306005157096) | 5306-01-339-9553 (5306013399553) | |
| 5306-00-655-7488 (5306006557488) | 5306-01-669-6717 (5306016696717) | 5306-00-151-0433 (5306001510433) | 5306-00-452-4577 (5306004524577) | |
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