| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.320 INCHES NOMINAL FIRST HOLE |
| CONCENTRIC HOLE DEPTH | 0.460 INCHES MINIMUM AND 0.520 INCHES MAXIMUM |
| CONCENTRIC HOLE DIAMETER | 0.1300 INCHES MINIMUM AND 0.1389 INCHES MAXIMUM |
| CRITICALITY CODE JUSTIFICATION | AAVH |
| FASTENER LENGTH | 1.500 INCHES NOMINAL |
| HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.200 INCHES NOMINAL |
| HEAD STYLE | HEXAGON |
| INTERNAL THREAD CLASS | 3B COUNTERBORE |
| INTERNAL THREAD DIRECTION | RIGHT-HAND COUNTERBORE |
| INTERNAL THREAD LENGTH | 0.260 INCHES NOMINAL COUNTERBORE |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4130 OVERALL |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| NOMINAL THREAD SIZE | 0.164 INCHES COUNTERBORE |
| SHOULDER DIAMETER | 0.4371 INCHES MINIMUM AND 0.4373 INCHES MAXIMUM |
| SHOULDER LENGTH | 1.030 INCHES NOMINAL |
| SHANK UNTHREADED HOLE DIAMETER | 0.096 INCHES NOMINAL FIRST HOLE |
| WIDTH BETWEEN FLATS | 0.619 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| STYLE DESIGNATOR | COUNTERBORE THREADED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | CVA5-5,TYPE 11B FSCM 80378 MFR REF SINGLE TREATMENT RESPONSE GRIP |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | CVA5-2 FSCM 80378 MFR REF SINGLE TREATMENT RESPONSE HEAD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | CVA5-2 FSCM 80378 MFR REF SINGLE TREATMENT RESPONSE THREADS |
| SURFACE TREATMENT | CADMIUM HEAD |
| SURFACE TREATMENT | CADMIUM THREADS |
| SURFACE TREATMENT | CHROMIUM GRIP |
| TEST DATA DOCUMENT | 81349-MIL-I-6868 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.470 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) COUNTERBORE |
| THREADS PER INCH | 32 COUNTERBORE |