2b single mounting facility thread class 2.870" overall length 1.810" overall width mtg bracket incl two auxiliary 0.170 in. min, 0.175 in. max dia mtg holes spaced 2.558 in. min, 2.567 in. max c to c unc single mounting facility thread series
0.437" single mounting facility thread length 1.899" overall length nonturn device type tab circular wafer, bushing mount unef single mounting facility thread series
2b second mounting facility thread class right-hand second mounting facility 3.250" overall length 3.090" overall width 32 second mounting facility thread quantity per inch unc second mounting facility thread series