Industrial Grade Knobs with Threads are manufactured using quality grade material that ensures good quality. The Knobs have plastic and brass insert threads of various sizes such as 5/16", 3/8", 1/2" and 5/8". The Knobs have mild steel stud threads of 5/16", 3/8", 1/2" sizes. The Industrial Grade Knobs with Threads can be availed in various specifications.