A stud as per DIN 976 are threaded rod starting from 4mm length; the thread may extend along the complete length of the rod. These are used in tension and for fastening pipe flanges.

nas1351n3-12

Bolts can be described as long shafts with a distinct head on one side. These are generally partially threaded. A fully threaded bolt is referred to as a screw.

A threaded rod is also recognized as a stud that is a long rod threaded on both ends; the thread may extend along the complete length of the rod. These are used in tension and for fastening pipe flanges and are available in variegated specifications.

Thread Qty: 32, Drive Style: Hexagon, Material: Iron, Surface Treatment: Passivate, Head Style: Flat Chamfer, NAS1351N3 series screw