2a single mounting facility thread class 1.180" overall length 1.000" overall width 32 single mounting facility thread quantity per inch unc single mounting facility thread series
2b single mounting facility thread class 4.060" overall length 1.250" overall width 32 single mounting facility thread quantity per inch unc single mounting facility thread series
2a single mounting facility thread class 0.375" single mounting facility thread length 1.900" overall length 1.750" overall width circular wafer, bushing mount unef single mounting facility thread series
Used on arts-3a, p/o 3a2 trackball assembly. 4 contacts; function switch, push button, illuminated; reference data: 3A2S1, ti-6310.8a, instruction book, arts iii data entryand display subsystem, vol 11, sec 10-11, pg 10-634 unf thread series