Any info on manufacturing self tapping bolts

ASARGENT · Mar 17, 2011

i need to manufacture some bolts with a 3/8-20 self tapping thread on the end of it. Does anyone know where i can find the specifications for a 3/8-20 self tapping? I can find 3/8-12, 3/8-16 and 3/8-24 threads, but no 3/8-20.

anyone have any ideas where i can find this info?

thanks.

67Cuda · Mar 17, 2011

I don't have an answer to your question, but why can't you use an off the shelf self tapping screw? Why re-invent the wheel, it's just a self tapping screw.

Tom

ASARGENT · Mar 17, 2011

67Cuda said:
I don't have an answer to your question, but why can't you use an off the shelf self tapping screw? Why re-invent the wheel, it's just a self tapping screw.

Tom

these are for a customer and the thread has to be a 3/8-20 thread and has to be to spec. that i can present to our inspector. i just have not been able to locate any guidelines for that particular thread.

thanks.

S_W_Bausch · Mar 17, 2011

I did a quick Google, and I think they only existed, if they ever did, as a special.

Someone's supply has run out, and Someone doesn't want to spend a big chunk of change and dribble them to the customer over a period of years.

I could be wrong.

If anyone has them, or might be willing to make them, try elco.

http://www.elcoconstruction.com/products/catalog/drilflex.pdf

The will want to know the material thickness, since that affects the flute length, heat-treat, etc.

ASARGENT · Mar 17, 2011

S_W_Bausch said:
I did a quick Google, and I think they only existed, if they ever did, as a special.

Someone's supply has run out, and Someone doesn't want to spend a big chunk of change and dribble them to the customer over a period of years.

I could be wrong.

If anyone has them, or might be willing to make them, try elco.

http://www.elcoconstruction.com/products/catalog/drilflex.pdf

The will want to know the material thickness, since that affects the flute length, heat-treat, etc.

will try. thanks.

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