2a single mounting facility thread class 0.469" single mounting facility thread length 3.375" overall length 32 single mounting facility thread quantity per inch tap, circular, bushing mount uns single mounting facility thread series
2a single mounting facility thread class right-hand single mounting facility 0.312" single mounting facility thread length 1.109" overall length 0.859" overall width 48 single mounting facility thread quantity per inch unc single mounting facility thread series
2b thread class right-hand 2.819" overall length 1.609" overall width 32 thread quantity per inch anodize surface treated hood, top opening w/clamp unc thread series