| THREAD SERIES DESIGNATOR | UNJC |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.750 INCHES MINIMUM AND |
| 2.500 INCHES MAXIMUM |
| FASTENER LENGTH | 2.500 INCHES NOMINAL |
| MATERIAL | STEEL COMP 4140 OR |
| STEEL COMP 4340 OR |
| STEEL COMP E4340 OR |
| STEEL COMP 8740 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR |
| AMS6415 ASSN STD 2ND MATERIAL RESPONSE OR |
| MIL-2-5000 MIL SPEC 3RD MATERIAL RESPONSE OR |
| MIL-S-6049 MIL SPEC 4TH MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE II,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND |
| 40.0 ROCKWELL C MAXIMUM OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HEAD STYLE | PAN |
| HEAD DIAMETER | 0.306 INCHES MINIMUM AND |
| 0.322 INCHES MAXIMUM |
| HEAD HEIGHT | 0.105 INCHES MINIMUM AND |
| 0.115 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| LOCKING FEATURE | PATCH THREADS |
| SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| 32.0 MICROINCHES GRIP |
| 32.0 MICROINCHES THREADS |
| SPECIFICATION/STANDARD DATA | 80205-NAS1190 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |