Replace derby screws
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Joined: Sep 2010
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From: North MS
Replace derby screws
I read in one of the many threads about changing primary derby torx screws to allen heads a while back. Someone stated you needed 1/4 by 20, 5/8 in long. I was in Home Depot yesterday and they only had 1/2 in and 3/4 in. Does anyone know if the 1/2 in will work. I did not have one of the torx with me to check it by.
Road Warrior
Joined: May 2009
Posts: 1,945
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From: Victoria, Australia
Yah-- the threaded holes are deep enough to take slightly longer Allen head screws. I did this myself with the regular HD washers and the new longer ones didn't bottom out.
1/2" long screws should give you plenty of meat to hold the clutch inspection "derby" cover on at the light torque setting of 84-108 inch lbs (9.5 - 12.2 Nm).
Personally I would try to lightly turn in one of the 3/4" by hand first to see if it bottoms out, then decide from there.
1/2" long screws should give you plenty of meat to hold the clutch inspection "derby" cover on at the light torque setting of 84-108 inch lbs (9.5 - 12.2 Nm).
Personally I would try to lightly turn in one of the 3/4" by hand first to see if it bottoms out, then decide from there.
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