| COLOR | GRAY THREADS |
| CONCENTRIC HOLE DEPTH | 0.225 INCHES MINIMUM AND 0.245 INCHES MAXIMUM |
| CONCENTRIC HOLE DIAMETER | 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM |
| FASTENER LENGTH | 1.903 INCHES MINIMUM AND 1.947 INCHES MAXIMUM |
| HARDNESS RATING | 31.0 ROCKWELL C MINIMUM FASTENER AND 36.0 ROCKWELL C MAXIMUM FASTENER |
| HEAD HEIGHT | 0.140 INCHES MINIMUM AND 0.160 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| INTERNAL THREAD CLASS | 2B COUNTERBORE |
| INTERNAL THREAD DIRECTION | RIGHT-HAND COUNTERBORE |
| INTERNAL THREAD LENGTH | 0.700 INCHES MAXIMUM COUNTERBORE |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6415 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 6414 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4340 OVERALL |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD DIAMETER | 0.190 INCHES |
| NOMINAL THREAD SIZE | 0.190 INCHES COUNTERBORE |
| SHOULDER DIAMETER | 0.315 INCHES MINIMUM AND 0.325 INCHES MAXIMUM |
| SHOULDER LENGTH | 1.288 INCHES MINIMUM AND 1.312 INCHES MAXIMUM |
| SPECIAL FEATURES | PAINT THREADS GRAY 36231 PER FED STD 595; HELICAL COIL INSERT FURNISHED |
| WIDTH BETWEEN FLATS | 0.610 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| STYLE DESIGNATOR | COUNTERBORE THREADED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 99167-PN14.08-01 TY Z CL 5 CAGEC 45153 MFR REF SINGLE TREATMENT RESPONSE FASTENER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-83286 MIL SPEC SINGLE TREATMENT RESPONSE THREADS |
| SURFACE TREATMENT | PAINT THREADS |
| SURFACE TREATMENT | PHOSPHATE FASTENER |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD SERIES | UNF COUNTERBORE |
| THREADS PER INCH | 32 COUNTERBORE |