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| Item Name | Bolt Internally Relieved Body |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5306 Bolts |
| National Item Identification Number (NIIN) | 01-249-4170 (012494170) |
| NCB Code | USA (01) |
| Manufacturer | Joint Oil Analysis Program, Commanding Officer |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAEL | THREADS PER INCH | 28 COUNTERBORE |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.460 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.970 INCHES MINIMUM AND 1.000 INCHES MAXIMUM |
| AASK | HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| AASU | HEAD HEIGHT | 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.306 INCHES MINIMUM AND 0.315 INCHES MAXIMUM |
| AATC | EXTENDED WASHER DIAMETER | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| AATD | EXTENDED WASHER THICKNESS | 0.059 INCHES MINIMUM AND 0.079 INCHES MAXIMUM |
| AAXC | CONCENTRIC HOLE DIAMETER | 0.213 INCHES NOMINAL |
| ABXT | INTERNAL THREAD LENGTH | 0.195 INCHES MINIMUM COUNTERBORE AND 0.205 INCHES MAXIMUM COUNTERBORE |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| BZRR | THREAD SERIES | UNF COUNTERBORE |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQJX | NOMINAL THREAD SIZE | 0.250 INCHES COUNTERBORE |
| CWWR | INTERNAL THREAD CLASS | 3B COUNTERBORE |
| MATT | MATERIAL | STEEL COMP E4340 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 6150 OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | COUNTERBORE THREADED |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Relevant Components for NSN - 5306-01-249-4170, 5306012494170 | ||||
| 5305-00-151-0390 (5305001510390) | 5305-00-162-0212 (5305001620212) | 5330-01-021-6193 (5330010216193) | 5306-01-667-2305 (5306016672305) | |
| 5305-00-702-7578 (5305007027578) | 5306-01-467-0619 (5306014670619) | 5340-14-507-0973 (5340145070973) | 5330-01-545-5049 (5330015455049) | |
| 5331-01-433-9967 (5331014339967) | 5330-01-176-0563 (5330011760563) | 5330-20-001-0516 (5330200010516) | 5305-00-550-9932 (5305005509932) | |
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