Custom made flange mounting collars that are perfectly square for mounting a shaft, tube or pipe to a flat surface or for attaching components to them are available from Stafford Manufacturing Corp. of Wilmington, MA. Stafford custom flange mounting collars can be manufactured from steel, stainless steel, alloys, aluminum and thermoplastics in a wide range of flange designs, hole patterns and sizes.  Incorporating the Accu-Clamp™ non-marring and perfectly square clamping feature, these one-piece collars can be machined into flat and stable mounting flanges, hubs or pulleys. Featuring flatness and perpendicularity held to < 0.001 TIR, Stafford custom flange mounting collars can be manufactured in bore sizes from 1/2”  to 6” I.D. with flanges up to 14” O.D. and also as two-piece designs. Typical applications include conveying, converting and packaging equipment as well as various power transmission, drive, and structural applications.