Correct option is A
Threading dies are held in a
die stock, which is a tool specifically designed to securely hold threading dies and enable manual threading operations on cylindrical workpieces (such as rods or pipes). The die stock typically comes with a handle for turning the die and applying the necessary torque for cutting threads.
A die case is typically a container or box used for
storing threading dies, but it is not used to hold the dies during threading operations.
A die holder is a general term that could refer to tools like a die stock or specialized holders used in
machine threading. For manual threading, the term "die stock" is more accurate and specific.
Applications of Die Stocks:
Manual Threading: Used for cutting external threads on rods, pipes, and bolts in small-scale operations.
Repair Work: Used to repair damaged threads or re-thread stripped bolts and rods.
Customization: Ideal for custom-threading operations where precise threads are needed for non-standard fasteners.
