| MATERIAL | STEEL COMP 8630 OR |
| STEEL COMP 8740 OR |
| STEEL COMP 4130 |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6280 ASSN STD 1ST MATERIAL RESPONSE OR |
| AMS 6322 ASSN STD 2ND MATERIAL RESPONSE OR |
| AMS 6324 ASSN STD 2ND MATERIAL RESPONSE OR |
| AMS 6370 ASSN STD 3RD MATERIAL RESPONSE |
| SURFACE TREATMENT | CADMIUM OVERALL |
| OVERALL LENGTH | 1.250 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNS NUT THREAD |
| UNF STUD THREAD |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| 0.250 INCHES STUD THREAD |
| THREAD CLASS | 3A STUD THREAD |
| THREAD QUANTITY PER INCH | 20 NUT THREAD |
| 28 STUD THREAD |
| THREAD PITCH DIAMETERS | 0.2253 TO 0.2273 INCHES NUT THREAD |
| THREAD LENGTH | 0.515 INCHES MINIMUM NUT THREAD |
| 0.531 INCHES MINIMUM STUD THREAD |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND |
| 32.0 ROCKWELL C MAXIMUM |