| OVERALL LENGTH | 21.860 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A331-74 ASSN STD SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 4140 |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD A |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD B |
| SPECIAL FEATURES | UNTHREADED SECTION OF ROD IS 0.745 IN. DIA. BY 19.60 IN. LONG; A SECTION OF UNTHREADED ROD HAS CUT AWAY EDGES,0.750 IN. LONG BY 0.480 IN. THICK; 2 PLACES,0.120 BY 0.0575 IN. DEEP,LOCATED BETWEEN THREADS AND UNTHREADED; USED ON M20 (BFA) |
| THREAD CLASS | 3A NUT THREAD A |
| THREAD CLASS | 3A NUT THREAD B |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD A |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD B |
| THREAD LENGTH | 0.620 INCHES NOMINAL NUT THREAD B |
| THREAD LENGTH | 1.500 INCHES NOMINAL NUT THREAD A |
| THREAD QUANTITY PER INCH | 13 NUT THREAD B |
| THREAD QUANTITY PER INCH | 20 NUT THREAD A |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD B |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) NUT THREAD A |