2b thread class right-hand 20 thread quantity per inch two slots ctr to ctr 1.350 in. distance; paint per fed std 595, gray no. 26270 per mil-c-81773 paint nut surface treated
2b thread class right-hand 28 thread quantity per inch extended nut diameter 0.875 in. ; width of slot in flange 0.101 in. min passivate surface treated