![]() ![]() Mix nut and bolt grades while maintaining mechanical properties Thread rolling photo courtesy of Horst Engineering/Thread Rolling Inc. Lathe-cut bolts typically have rougher threads which create more heat when coupled with nuts that usually have tapped threads. Ordinary bolt threads are rolled between dies, which produce relatively smooth surfaces. The slower the power tool speed, the less heat is generated and the less likely galling will occur – during installation and removal. So, control speed when using powered equipment, or use hand tools where galling may occur.įine threads can have more surface area and their thread clearance may be reduced. Other remedies include Loctite and Aero-Chem® lines of anti-seize products. They include PTFE, commonly referred to as Teflon, PVDF, PFA, and FEP. Fluoropolymer coatings are also effective. Brand names include Perma-Slik® RAC, Xylan, and DELTA® SEAL. It really is slick.Pre-applied or applied on-site, dry film lubricants or lubricants rich in molybdenum disulfide (moly), graphite, mica, talc, and even extreme pressure waxes are effective at reducing friction. You could call this product a poor man's nickel-boron coating for bolt carriers. I also really like the fact that once this stuff is dry, it doesn't make everything it touches black, like a lot of graphite products do. I've also used it on bolt carriers, buffer tube springs and buffer bodies, specifically, and any other high friction area that I don't necessarily want wet. It keeps the springs from rusting, as well as making them very slippery. I use the ZEP on CS mag springs and inside the mag bodies. If you just want to do mags I would lean to the brownells product if you want to try a a dry weapons lube and you can get a can of it to try the zep would get the nod. ![]() With my limited experiance with both and also remember the zep dry moly experiace was 10 yrs ago. The Zep dry moly lube coats a black color the brownells mag slick drys clear. I do remeber that I liked it and was pissed when I was told I would have to pay $200 a case to try it again. I only got the one can so I dont have to much experiance with it. The liberated sample that I got I tried on pistols I would coat the inside of slides ,barrel and the recoil guide rod. I dont remember every using Zep dry moly lube on magazines but i suppose you could. In all cases the dry lubed magazines were much smoother in travel then the others from 5 to 25rds loaded and while clean or lightly carbon magazines will function just as well the dry lube treatment may offer a bit of extra reliability when conditions become extreme and foreign material invades the magazine tube. Now not that this informal test means anything but I can see why some of the guys in the military are using the dry lube as it does make the treated old Colt magazines a bit smoother in follower travel over the others in the test.ĮTA: Since the drag/friction of loaded rounds inside the magazine can cause some dirty magazines not to function properly I uploaded five rounds at a time to a max of 25rds and used my paint stirrer to push the rounds/follower down and feel the resistance and then slowly allow the follower to return. I must say that the dry lubed magazines were much smoother as the follower moved over its full range of travel when compared to the cleaned but un-lubed and the uncleaned stock magazines. I used a paint stirrer to cycle the magazine follower up and down to feel the resistance of the follower as it moved Thu the magazine. Only on two of the magazines I applied a few second burst of the lube to the inside of the magazine body and another second on the spring and follower and allowed three minutes to dry. I disassembled and used a baby bottle bush and some hot water to clean inside four of the magazine bodies and a cloth to wipe down the spring and follower. I found a can of the PTFE X-Extreme ultra dry lubricant at local hard ware store for $2.49 and grabbed six Colt labeled 30rd magazines which have a good amount of use on them. ![]()
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