| Item Name | Bolt Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 01-399-6957 (013996957) |
| NCB Code | USA (01) |
| Manufacturer | Grimes Aerospace Company |
| MRC | Criteria | Characteristic |
|---|---|---|
| MRC | Decoded Requirement | Clear Text Reply |
| AATB | Width Between Flats | 0.375 INCHES NOMINAL |
| CWYB | Shoulder Shape | ROUND FIRST SHOULDER |
| MATT | Material | STEEL COMP 630 OVERALL |
| AASK | Head Style | HEXAGON |
| SFTT | Surface Treatment | OXIDE OVERALL |
| AASA | Thread Length | 0.312 INCHES NOMINAL |
| AAJF | Thread Direction | RIGHT-HAND |
| HUES | Color | BLACK OVERALL |
| THSD | Thread Series Designator | UNJF |
| AATX | Shoulder Length | 0.968 INCHES NOMINAL FIRST SHOULDER |
| CQFM | Hardness Rating | 36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| AASB | Fastener Length | 1.280 INCHES NOMINAL |
| CMLP | Thread Quantity Per Inch | 28 |
| AAJD | Thread Class | 2A |
| AHYM | Nominal Thread Diameter | 0.250 INCHES |
| AATN | Shoulder Diameter | 0.311 INCHES MINIMUM FIRST SHOULDER AND 0.312 INCHES MAXIMUM FIRST SHOULDER |
| AASU | Head Height | 0.125 INCHES NOMINAL |
| MDCL | Material Document And Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| STDC | Surface Treatment Document And Classification | MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Relevant Components for NSN - 5306-01-399-6957, 5306013996957 | ||||
| 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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