MATERIAL | STEEL COMP 8640 |
MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OR |
| ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE |
SURFACE TREATMENT | CADMIUM OR |
| ZINC OVERALL |
STYLE DESIGNATOR | RECESSED |
LENGTH OF RECESSED PORTION OF SHANK | 3.360 INCHES NOMINAL |
DIAMETER OF RECESSED PORTION OF SHANK | 0.207 INCHES MINIMUM AND |
| 0.210 INCHES MAXIMUM |
OVERALL LENGTH | 4.760 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 | 0.2261 TO 0.2274 INCHES STUD THREAD |
THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| RIGHT-HAND STUD THREAD |
THREAD LENGTH | 0.500 INCHES NOMINAL NUT THREAD |
| 0.500 INCHES NOMINAL STUD THREAD |
HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND |
| 34.0 ROCKWELL C MAXIMUM |