| CONCENTRIC HOLE DIAMETER | 0.374 INCHES MINIMUM AND 0.381 INCHES MAXIMUM |
| CONCENTRIC HOLE DEPTH | 1.190 INCHES NOMINAL |
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.640 INCHES NOMINAL FIRST HOLE |
| FASTENER LENGTH | 1.830 INCHES NOMINAL |
| HEAD DIAMETER | 1.250 INCHES NOMINAL |
| HEAD HEIGHT | 0.120 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758,COND D MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| MATERIAL | STEEL COMP 4130 OVERALL |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| SHANK UNTHREADED HOLE DIAMETER | 0.110 INCHES MINIMUM AND 0.115 INCHES MAXIMUM FIRST HOLE |
| SHOULDER DIAMETER | 0.748 INCHES MINIMUM AND 0.749 INCHES MAXIMUM |
| SHOULDER LENGTH | 1.310 INCHES MINIMUM AND 1.320 INCHES MAXIMUM |
| STYLE DESIGNATOR | CONCENTRIC HOLE UNTHREADED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | LC+77-1061,CLASS 2,TYPE 2,FSCM 36659 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| TEST DATA DOCUMENT | 36659-LC+72-1072 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 | 0.427 INCHES MINIMUM AND 0.466 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| WIDTH BETWEEN FLATS | 1.053 INCHES MINIMUM AND 1.066 INCHES MAXIMUM |