| MATERIAL | STEEL COMP 8740 |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| OVERALL LENGTH | 1.250 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| UNS STUD THREAD |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| 0.250 INCHES STUD THREAD |
| THREAD CLASS | 3A NUT THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |
| 20 STUD THREAD |
| THREAD PITCH DIAMETERS | 0.2278 TO 0.2293 INCHES STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.727 INCHES MAXIMUM NUT THREAD |
| 0.600 INCHES MAXIMUM STUD THREAD |
| SPECIAL FEATURES | NUT AND STUD THREADS ARE SAFETY CRITICAL; NUT THREAD PER MIL-S-7742 UNDER APPLICATION CATEGORY SAFETY CRITICAL, STUD THREAD IS UNIFIED FORM SPECIAL PER FED-STD-H28/2. APPLY ONE COAT OF MIL-P-23377, TY 1, CL 1 OR 3 AND TWO TOP COATS OF MIL-C-46168, COLOR CODE 33538 PER FED-STD-595 TO TOP OF NUT END |
| CRITICALITY CODE JUSTIFICATION | THSD |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND |
| 32.0 ROCKWELL C MAXIMUM |
| SURFACE FINISH | 63.0 MICROINCHES SHANK |