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  1. toes112

    QPQ vs. Nitrotec (Gas Nitrocarburizing)

    Besides the environmental differences, is there really any difference to the end product between these 2 surface treatment processes? Hardness, Aesthetics, Durability, Part Deformation would be key characteristics.
  2. toes112

    Machined Threads in ZA-27 Casting

    I'm having trouble holding minor diameter tolerances and major diameter tolerances in a ZA-27 Casting. The casting includes a hole (.349" Min .359" Max" - 3/8" in length) and we are trying to thread the entire length M10 X 1. Using cutting taps and form taps, we struggle to hold standard...
  3. toes112

    Jam Nut Torque Value

    Shoulder bolt and jam nut are 1/2-13 thread.
  4. toes112

    Jam Nut Torque Value

    I have not been able to find much information regarding torque values applied to jam nuts, so hopefully this discussion will share useful knowledge. Situation: I have two pieces of material that rotate about each other via a shoulder bolt. The shoulder bolt gets torqued to 55 ft-lbs into part...
  5. toes112

    WHAT DOES MC005 MEAN?

    On a component drawing, the material spec is 16 GA MC005 SHEET. What purpose does MC005 represent?
  6. toes112

    Bending Stainless 440C

    arunmrao, You are thinking in the same path as we were. We took a piece that was not threaded, and bent the end. We matched the distance from the bend to the end of the bar, to be the same as the distance from the threads to the bend. Result: a clean bend with no cracks. We actually even...
  7. toes112

    Bending Stainless 440C

    The threads end 2" from the start of the bend.
  8. toes112

    Bending Stainless 440C

    We have come across a situation in which we have 2 bends on a 5/8" dia. bar of 440C stainless, annealed and recorded at 225 Brinell, where we have compressive failure on the one bend and not the other. The bar is 20" in length with 2-90 degree bends located 5 inches apart. The bar also gets...
  9. toes112

    Heat Treating 1141 for Corrosion Resistance

    I am trying to avoid plating, coating, etc. on a hardened part but still need for it to resist corrosion. I'm heat treating a part made of 1141 to Rc 58. The company hardening my part is using the furnace then performing the quenching in an oil bath. In this typical application can I assume...
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