A professional who sets up and operates one or more automatic machines to roll-thread hot or cold forged bolt blanks, according to work orders. Respnsibilities include:

• Installs specified roll-threading dies in machine, using wrenches and rule.
• Adjusts distance between roll-threading dies to set pressure of threading dies on bolt shank, using rule and following product specifications.
• Fills feed mechanism with stock, or feeds bolt blanks by hand and starts machine.
• Measures bolts with micrometer, thread gauge, or rule, and adjusts dies and stops to maintain specified dimensions.
• May signal operator of crane to fill feed hoppers with stock.
• May set up machine for production-machine tender.