| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.690 INCHES MINIMUM AND 2.705 INCHES MAXIMUM FIRST HOLE |
| FASTENER LENGTH | 2.900 INCHES NOMINAL |
| HEAD HEIGHT | 0.300 INCHES NOMINAL |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP E4340 OR STEEL COMP 4340 OVERALL |
| MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| SHOULDER DIAMETER | 1.2425 INCHES MINIMUM AND 1.245 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 2.334 INCHES MINIMUM AND 2.349 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| SHANK UNTHREADED HOLE DIAMETER | 0.156 INCHES NOMINAL FIRST HOLE |
| WIDTH BETWEEN FLATS | 1.625 INCHES NOMINAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2416 ASSN STD ALL TREATMENT RESPONSES OVERALL |
| SURFACE TREATMENT | NICKEL AND CADMIUM OVERALL |
| TEST DATA DOCUMENT | 76301-MACPCS 21201 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 | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.551 INCHES MINIMUM AND 0.566 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNF |