Delta P-20 Material Holdown Clamping Screw - Router Forums
 
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post #1 of 7 (permalink) Old 06-07-2008, 04:33 AM Thread Starter
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Default Delta P-20 Material Holdown Clamping Screw

Any ideas what the diameter and pitch are for the material holddown adjusting screw on a Delta P-20? My dial caliper says the diameter of the hole is 0.261", which is close to an M8 screw, but neither the fine or regular pitch M8 screw will fit. A 1/4" screw slides in and a 5/16" screw is too big. The hardware store doesn't carry 9/32" screws. Thoughts?
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post #2 of 7 (permalink) Old 06-07-2008, 08:35 AM
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Hi rstermer,

Have you considered retapping the hole to accept a different sized screw? One that is more common.

Ken

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post #3 of 7 (permalink) Old 06-07-2008, 09:07 AM
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HI rstermer

This is what I do when I don't have the right screw for a part.

I take the part to ACE hardware, they will let you dig in the screw bins until you find the right one...unlike many stores,they don't want you to open the boxes but most of the stock they have are in pull out bins..

========

Quote:
Originally Posted by rstermer
Any ideas what the diameter and pitch are for the material holddown adjusting screw on a Delta P-20? My dial caliper says the diameter of the hole is 0.261", which is close to an M8 screw, but neither the fine or regular pitch M8 screw will fit. A 1/4" screw slides in and a 5/16" screw is too big. The hardware store doesn't carry 9/32" screws. Thoughts?
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post #4 of 7 (permalink) Old 06-07-2008, 11:27 AM Thread Starter
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Originally Posted by Hamlin
Hi rstermer,

Have you considered retapping the hole to accept a different sized screw? One that is more common.

Yes, I'm thinking 3/8" as the 0.261" dia. hole is already larger than the minor diameter for a 5/16" screw, at least according to the table I found on the internet earlier this morning.
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post #5 of 7 (permalink) Old 06-07-2008, 11:35 AM Thread Starter
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Quote:
Originally Posted by bobj3
HI rstermer

This is what I do when I don't have the right screw for a part.

I take the part to ACE hardware, they will let you dig in the screw bins until you find the right one...unlike many stores,they don't want you to open the boxes but most of the stock they have are in pull out bins..

========
Thanks Bob, it is a little too big to do that, but I followed your idea in principle. I went over to Ace and bought one of every screw that looked like a possibility, took them home, tried them all and determined none of them would fit. So I guess the hole is stripped and I will have to drill and tap for 3/8".
As an aside, the folks at Ace were very accomodating in taking back all the stuff which did not fit. I'm certainly going to go there for all my hardware needs in the future to show my appreciation for their good customer service.
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post #6 of 7 (permalink) Old 06-10-2008, 12:17 PM Thread Starter
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Quote:
Originally Posted by Hamlin
Hi rstermer,

Have you considered retapping the hole to accept a different sized screw? One that is more common.
That worked fine. I drilled it out with a Q size drill and tapped it with a 3/8-24 tap. It now works like a charm.
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post #7 of 7 (permalink) Old 06-10-2008, 06:27 PM
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Hi rstermer,

Glad to hear it worked out for ya.

Ken

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