This is new stock. Each revolution of the screw moves .250 inch linearly. Accurate to .009 inch / foot
Generally this item ships one per package. In some cases we have access to re-useable packaging which permits more than one to ship together.
What is Low Carbon Steel? Low carbon steel is a machinable steel like C1018, delivered fairly soft, but
What is Alloy Steel? Alloy steel is pre-heat treated 4140 alloy. Harder to machine and also tougher. Minimum tensile strength is 125,000 psi. Hardness is 271 Brinell. Alloy lead screws are black-oxide finish.
If it is important to you, please be sure to check our listing description to determine if the offering is Low Carbon or Alloy steel. Our lead nuts are designed to fit either alloy and give a long and accurate life with either material.
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