1b thread class right-hand 12 thread quantity per inch 8-32 unc-2b threaded hole in the center of the cover nickel surface treated internal threads un thread series
2a single mounting facility thread class 0.417" single mounting facility thread length 2.309" overall length tap, circular, bushing mount unef single mounting facility thread series
Used on 5895-01-240-0577 central,communications. 2a thread class right-hand 2.328" overall length 8 thread quantity per inch furnished items - chain special acme thread series
2a thread class right-hand 2.840" overall length 0.250" overall width 56 thread quantity per inch item must comply with requirements of defense supply center columbus production standard no. LO4402 unc thread series