Tornillos de cabeza hueca y pernos

Tornillo de cabeza hueca de acero de aleación con acabado de óxido negro con accionamiento hexagonal ASTM A574 de 3/8"-16 x 3-1/2" - HoloKrome USA

Unbrako Socket Head Shoulder Screws are hardened shafts with a knurled head and threaded portion. The shoulder formed where the threads meet the larger diameter body acting as a stop when the screw is threaded into a tapped hole, permitting the screw to be used as a pivot, shaft, or stationary guide. The precision tolerance on the shoulder provides close and accurate mating with the fastened components. Unbrako manufactures to a tolerance position closer than that required by international standards.<ul><li>Precision hex socket provides maximum wrenching strength and full tightening without cracking or reaming socket, along with ample metal in fillet area for maximum head strength.</li><li>Controlled concentricity between head and body for easier, more accurate assembly</li></ul>