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stripped allen screw removal
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<blockquote data-quote="Trickymissfit" data-source="post: 643161" data-attributes="member: 25383"><p>I don't really recommend Black Max as it's beyond forever! </p><p> </p><p>The term Allen head goes back to who heald the original patents. Before that a socket head cap screw was often called a "Buttress headed cap screw" (yes I am that old!!) But you are correct in the terminology. I served an apprenticeship with old Germans and Dutchmen, and I kinda picked those names up from them. The second machine I rebuilt was a Baird Former that was pre WWI!! They guy I was working with took me up into theis area that had dozens of them, and some were almost new; yet they all looked the same. The only serious difference was that the real old ones had these odd ball looking cap screws that sorta looked like a modern day Torx headed screw. That was a Buttress screw. You had to watch out carefully has some of these machine were so old that they had the old 1/2" threads (1/2-12 or 1/2-11 tpi). One of the first things we did was to convert all the oddball threads over to the new standard threads. In today's times we still see a 1"-12 thread aong with a 1"14 thread, the new standard is the 12, but nobody wants to make the change. I can't ever recall seeing a 1"-12 thread in anything OEM. I've probably seen way too many odd balls threads in my lifetime, and a few just drove me batty. The worst stuff I ever ran across was with draw bars and chucking systems used on jap equipment. They like to use oddball pitch diameters with standard types of threads or even odd ball thread pitches with even odder pitch diameters (I had an M27 out of an Okuma that just about made me finish loosing the rest of my sanity)</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 643161, member: 25383"] I don't really recommend Black Max as it's beyond forever! The term Allen head goes back to who heald the original patents. Before that a socket head cap screw was often called a "Buttress headed cap screw" (yes I am that old!!) But you are correct in the terminology. I served an apprenticeship with old Germans and Dutchmen, and I kinda picked those names up from them. The second machine I rebuilt was a Baird Former that was pre WWI!! They guy I was working with took me up into theis area that had dozens of them, and some were almost new; yet they all looked the same. The only serious difference was that the real old ones had these odd ball looking cap screws that sorta looked like a modern day Torx headed screw. That was a Buttress screw. You had to watch out carefully has some of these machine were so old that they had the old 1/2" threads (1/2-12 or 1/2-11 tpi). One of the first things we did was to convert all the oddball threads over to the new standard threads. In today's times we still see a 1"-12 thread aong with a 1"14 thread, the new standard is the 12, but nobody wants to make the change. I can't ever recall seeing a 1"-12 thread in anything OEM. I've probably seen way too many odd balls threads in my lifetime, and a few just drove me batty. The worst stuff I ever ran across was with draw bars and chucking systems used on jap equipment. They like to use oddball pitch diameters with standard types of threads or even odd ball thread pitches with even odder pitch diameters (I had an M27 out of an Okuma that just about made me finish loosing the rest of my sanity) gary [/QUOTE]
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