Can we please stop with the 1st grader shit now?
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Can we please stop with the 1st grader shit now?
Owner/Instructor at Semper Paratus Arms
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Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com
So from an engineering standpoint, what is the demarcation line for when you switch from inch-lbs to ft-lbs? Iis it a function of fastener diameter, and all small screws are always specced in in-lbs, while larger nuts are specced in ft-lbs?
When I think in-lbs I think fastening split rings on optics, floorplates on BA rifles, etc. But then when we talk installing barrels and receiver extensions, we should always think ft-lbs because of their larger diameters? Or is it a screw threading size issue -- fine threads get in-lbs and coarser threads get ft-lbs?
The military tool has a 1/2 hole for use with a torque wrench... That by it's self should immediately clue you in that the spec is in ft/lbs not in/lbs. I modified my MI industries castle nut tool for use with a torque wrench. Because I couldn't make the hole as close to the head of the tool as I wanted, I used a crow's foot torque calculator to find the right distance to get within the 38-42 ft/lbs spec, and use a whole number. I use the torque wrench set at 35 ft/lbs, and I marked the tool so that I don't forget...
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olekennyroy great idea. I had always wondered about doing something like that. If you don't mind me asking what did you cut the hole with?
Last edited by yellow50; 12-13-11 at 09:21.
I used a sharpie to draw the square. I drilled 5 1/8" holes, 1 in each corner, and 1 in the center. Then I used a 3/8" to open up the center. I followed up with a triangular file to form the sides. I threw the wrench in the oven while cooking shake and bake chicken, 400* for 45 minutes, to harden it up a little.
Last edited by C4IGrant; 12-13-11 at 09:42.
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