2a single mounting facility thread class 0.250" single mounting facility thread length 2.330" overall length 32 single mounting facility thread quantity per inch tap, circular, bushing mount uns single mounting facility thread series
2a thread class right-hand 0.870" overall length 0.530" overall width 56 thread quantity per inch polarized, 2 mtg studs 0.150 in. lg unc thread series
2a single mounting facility thread class 0.380" single mounting facility thread length 2.437" overall length 1.600" overall width circular wafer, bushing mount unef single mounting facility thread series