2a 1st end thread class 18 1st end thread quantity per inch hexagon in center with two wire locking holes 0.062 min 0.067 max in. dia uns 1st end thread series
3a thread class right-hand 0.345" thread length 1.540" outside diameter u/o B1b acft; tab lengthwise of pt 0.09 in. min to 0.11 in. lg w/0.040 in. min to 0.050 in. max dia hole
3a all ends thread class 2.418" overall length bulkhead on fluid connection anodize body surface treated male coupling half unjf all ends thread series