Part number coding rule: 00029 = thread specification code; 0407 = nominal overall length 40.7 mm
Thread standard: 1/4″-28 UNRF fine thread (US oilfield brake unified thread)
Screw total length: 40.7 mm, full shank threaded design
Head type: Countersunk flat head with internal hex socket drive
Drive size: 3/16″ Allen hex key matching
