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Manufactured from 4140 heat-treated steel, Dillon’s jaw nuts and keys provide high impact resistance and tensile strength along with extended jaw nut life. According to the company, the 4140 jaw nuts and keys are well-suited for workholding applications requiring durability and high strength, especially when compared with those made out of case-hardened 1018 steel. Dillon’s jaw nuts, T-nuts and keys are available to fit all power chucks measuring 6" to 24" in diameter, including Kitigawa, Rohm, Samchully, SMW, SMW-Autoblok and others. Additionally, Dillon says an extra set of jaw nuts can convert a normal chuck into a quick-change chuck, reducing jaw-change time by as much as 60 percent, since the user can preassemble subsequent chucks during machining.