5/8" BSF Grub Screw by 2" long

Wouldn't it be easier to cut a slot in the end of the studding for a screwdriver rather than cutting a hex socket?

Alan

Wouldn't it be easier to cut a slot in the end of the studding for a screwdriver rather than cutting a hex socket?

AlanA

IT needs to be high tensile steel, and adjustment with a screwdriver in this situation would not be easy but thanks for the thought

AWEM

I'll ask around at work, might strike lucky.

Thanks Mark, that would be much appreciated

AWEM

I recently made two brass carb jets that need a hex recess and tight-fitting key to hold them in place while being installed. The tooling I made to broach the hex consisted of a 6-hole sheet metal index disk bored to fit my lathe's spindle thread, secured by the collet holder removal nut, and a hex key one size smaller ground flat on the end.

I held the disk in each of the 6 positions with a cobbled-up index pin made from brazing rod and broached out the hex at 0.001" per hand-fed cut with the sharpened hex key in a boring bar holder. The key cuts with the angle that's toward the operator and set to center height. After a few passes all around I ran in the shop-made 90-degree-point D bit, which originally formed the recess and the lead-in to the metering hole, to knock off the shavings.

jsw

If I hadd put a hex socket into a 5/8 screw I would tap the end of the screw and use a 7/16 or 3/8 set screw threaded into the larger screw and retained with Loctite. Eric

If the chosen high tensile steel is too difficult to tap, maybe you could machine or grind a male hex section on the end and use a modified socket head cap screw for the wrench. Then you could shape it with a carbide flycutter and not risk a more delicate and expensive tool. jsw

Thanks chaps for the suggestions, but if I end up having to put a hex recess into the end of the HT stud, I will use my die sinker EDM machine as the tooling just needs to be a copper or graphite hex with a hole down the middle for flushing. I might even get away for a one off with a bit of hex brass bar :)

AWEM

"Andrew Mawson" wrote in message news: snipped-for-privacy@bt.com...

Nice that you have it. We have to make assumptions when someone asks how to do a simple operation, such as that they are an amateur with only a hobbyist lathe and/or mill. I have a surface grinder but rarely suggest an answer that needs one. jsw

Thanks Jim. Most of the people on this newsgroup know me as I've been here for rather a long time. (15-20 years) The problem comes when people come via google groups and think that it is a forum :)

AWEM

And when they don't read the thread properly and discover you said you'd die sink it in the original post ... ;)

-- Peter F (who would grind a square on the end of the threaded rod)

Well I don't know why I didn't suggest just pulling out your EDM. I mean that's what I would do . If I had an EDM machine. EDM would make a nice and easy job for making the female hex shape. Cheers, Eric