Used on aircraft application,j-52 engine. 3a thread class right-hand 0.160" thread length 0.250" outside diameter w/slot drive on to end cadmium surface treated
1a external thread class right-hand external 13.680" overall length anodize surface treated plug, tube fitting flared (note: drilled hole is optional should not be considered as a separating characteristic unf external thread series
Used on sediment strainer. intake hole, 1-1/64 in.dia located on side perpendicular to mtg holes rectangular w/ or w/o mtg holes (incl square) (basically flat)