2a single mounting facility thread class 0.250" single mounting facility thread length 1.217" overall length snap or line unef single mounting facility thread series
2a single mounting facility thread class 0.280" single mounting facility thread length 1.220" overall length pole pos opposite pos three on either side of case snap or line unf single mounting facility thread series
2a single mounting facility thread class 0.375" single mounting facility thread length 1.780" overall length circular wafer, bushing mount unef single mounting facility thread series