| MATERIAL | ALUMINUM ALLOY |
| MOUNTING FACILITY TYPE AND QUANTITY | 1 UNTHREADED HOLE THIRD MOUNTING FACILITY |
| MOUNTING FACILITY TYPE AND QUANTITY | 2 THREADED HOLE FIRST MOUNTING FACILITY |
| MOUNTING FACILITY TYPE AND QUANTITY | 3 UNTHREADED HOLE SECOND MOUNTING FACILITY |
| NOMINAL THREAD SIZE | 0.112 INCHES FIRST MOUNTING FACILITY |
| OVERALL DIAMETER | 0.810 INCHES MINIMUM AND 0.823 INCHES MAXIMUM |
| OVERALL HEIGHT | 0.289 INCHES MINIMUM AND 0.311 INCHES MAXIMUM |
| SPECIFICATION/STANDARD DATA | 81349-MIL-H-87111/4 GOVERNMENT SPECIFICATION |
| SURFACE TREATMENT | ANODIZE |
| TEST DATA DOCUMENT | 81349-MIL-H-87111 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 | 2B FIRST MOUNTING FACILITY |
| THREAD SERIES DESIGNATOR | UNC FIRST MOUNTING FACILITY |
| UNTHREADED MOUNTING HOLE DIAMETER | 0.189 INCHES MINIMUM AND 0.211 INCHES MAXIMUM SECOND MOUNTING FACILITY |
| UNTHREADED MOUNTING HOLE DIAMETER | 0.056 INCHES MINIMUM AND 0.078 INCHES MAXIMUM THIRD MOUNTING FACILITY |