Pressed Plate Saddles

Where pressed plate saddles are employed they shall be formed to bed closely to the boiler, and machined on the face jointing the mounting and on the edges. The studs for attachment of mountings if screwed through the saddle, shall each be fitted with a nut on the inside having a thickness equal to the diameter of the stud. Where the stud holes do not penetrate through the saddle, the length of the screwed portion of the stud in the plate shall not be less than the diameter of the stud.