All of TR's pillars come as standard with undercut or non standard without undercut. The advantages of undercut are that there is no need for washers in assembly and they offer a flush fit. This data sheet details the range of materials and sizes the spacers and pillars are available in.
Babcock marks next stage in submarine dismantling project
Surely on a national security project all contractors ought to be UK owned? This is similar to the life enhancement of our nuclear stations which has...