Size 138 DUNE 32 oz.
Size 138 Nylon is a heavyweight thread typically used for sewing heavy-duty leather, upholstery fabric, canvass, and auto interiors. This size is also known as Tex 135 and Government Size 3-Cord. It has an 32 lb. (14.5 kilo) tensile strength; a 0.020 in. (0.508 mm) diameter; and gives about 5,600 yards (1,820) meters) per pound.
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