| CONNECTION STYLE | FLARED |
| HEAD CORE DIAMETER | 0.312 INCHES NOMINAL |
| HEAD HEIGHT | 0.190 INCHES NOMINAL |
| HEAD TYPE | CORED |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 4121 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | ALUMINUM OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | PLUG,MACHINE THREAD - AMS 4121,PREFORMED PACKINF,MIL-S-8879 |
| NOMINAL THREAD SIZE | 0.313 INCHES EXTERNAL |
| OVERALL LENGTH | 0.550 INCHES NOMINAL |
| SEAT ANGLE | 45.0 DEGREES |
| STYLE DESIGNATOR | PLUG, MACHINE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2470 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ANODIZE OVERALL |
| SPECIAL FEATURES | SURFACE TEXTURE IS 125 MICROINCHES EXCEPT 63 MICROINCHES ON HEX HEAD BEARING SURFACE; ITEM IS INACTIVE FOR NEW DESIGN, 7 DEC 1970, EXCEPT FOR REPLACEMENT PURPOSES |
| THREAD CLASS | 3A EXTERNAL |
| THREAD DIRECTION | RIGHT-HAND EXTERNAL |
| THREAD LENGTH | 0.300 INCHES NOMINAL EXTERNAL |
| THREAD QUANTITY PER INCH | 24 EXTERNAL |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) EXTERNAL |