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  1. PTorrejon

    Galling of bolts

    The atmosphere where this equipment is a clean sanitary environment. I can't use any type of lubricant on the bolt because it may contaminate the product when the operators handle the bolt and charge the raw materials. The yield strength on the bolt is 75% approximately at 40 ft-lbs. We have...
  2. PTorrejon

    Galling of bolts

    I'm using a 1/2" 13 UNC 304 SS hex bolt (SA193-B8) with a Monel nut (SB-164) to tighten a 316L ss 10" sanitary high pressure clamp that is installed on a vessel. We are torquing the bolt assembly to 40 ft-lbs. The 316L SS vessel is heated to 80 deg C, and after reaching ambient temperature the...
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