axle thread size
 

Posted by Shannon Schnepp.

Coach on team #461, Westside Boiler Invasion, from Purdue University/West Lafayette High School and Purdue University.

Posted on 1/26/2000 4:59 PM MST



Does anyone know what the internal/external thread size for the axle on the provided drill motors is?

3/8-24 & Left hand 10-24
 

Posted by Joe Johnson.   [PICTURE: SAME | NEW | HELP]


Engineer on team #47, Chief Delphi, from Pontiac Central High School and Delphi Automotive Systems.

Posted on 1/26/2000 6:05 PM MST


In Reply to: axle thread size posted by Shannon Schnepp on 1/26/2000 4:59 PM MST:



I am 100% sure that the outside thread is a 3/8-24 -- see McMaster.com under drill chucks. They come standard in 3/8-24 thread.

As to the inside thread, I am 95% that it is a left hand #10-24. BUT... I am also fairly sure that it is not a standard left hand thread. Something in my brain from days gone by tells me that it is a slightly enlarged thread. Anyway, you can buy left hand bolts from McMaster-Carr as well.

Go to McMaster.com & find part number: 91670A245

HOWEVER, I think you will be much happier if you buy the proper screw from the Bosch Drill Service center.

I have one on my desk at the office. I will get the part number and post it tomorrow -- remind me if I forget.

Joe J.

Left Hand #10-32?
 

Posted by Joe Johnson.   [PICTURE: SAME | NEW | HELP]


Engineer on team #47, Chief Delphi, from Pontiac Central High School and Delphi Automotive Systems.

Posted on 1/27/2000 5:40 AM MST


In Reply to: 3/8-24 & Left hand 10-24 posted by Joe Johnson on 1/26/2000 6:05 PM MST:



Hi all,

I have the screw in hand. It is NOT a #10-24 left hand. The #10 seems right, but the pitch is finer. I suppose that it is a #10-32 Left Hand Thread.

BUT....

I have the Bosch Part Number (at least as of 1997 when we purchased these screws) : 3603430505

Good luck.

Joe J.

Order the screws from SB Power Tool
 

Posted by Peg Warrick.

Other on team #191, X-Cats, from Wilson Magnet School and Xerox.

Posted on 1/27/2000 6:28 PM MST


In Reply to: axle thread size posted by Shannon Schnepp on 1/26/2000 4:59 PM MST:



If you contact the service department at SB Power Tool in NJ they are very familiar with which drills the FIRST teams have. When I mentioned that I needed the left hand threaded screws he knew exactly what I wanted.
I don't have the FIRST rules handy, but their number is in the supplier contact list. Last year they ran out early so call soon. I just ordered some at $1.50 each.