Heavy Hex Nuts . There are numerous grades and the heavy pattern is typically used for large diameter and high strength bolts. See our nut compatibility chart to herepatible heavy hex nut (s) for a specific grade of bolt. Since hot-dip galvanizing typically adds 2.2 to 5 mils of thickness to the threaded portion of a fastener,. Heavy Hex Structural Nuts are manufactured to ASTM A563, ASTM A563M and ASTM A194 specifications and are designed. to be stronger than the bolts with which they are assembled. Therefore, a higher strength nut typically may be substituted in the. … Understanding Fastener Grades and Classes. A head with no markings is Grade 2, one with 3 lines spaced 120 degrees is Grade 5, and 6 lines spaced at 60 degree intervals is Grade 8. Nuts are marked in several different ways—see Identification Marks for Hex and Heavy Hex Nuts below.

Grainger offers heavy hex nuts with diameters larger than most hex nuts . Our collection features a larger-bodied nut size, compatible with bigger bolts . Shop for various material grades , metals, widths, heights, finishes and more to make for a customizable experience. These nuts are often used in conjunction with an extra-wide hex nut to fasten Grade 9 bolts in heavy machinery, such as earth-moving equipment. Grade 5 Heavy Hex Nuts. 3/8, 7/ 16 , 1/2, 5/8, 3/4 and 1 1 /8 inch heavy hex nuts - Grade 5 / Zinc.

Heavy hex bolts are heavy profile hexagon bolts with large width across flats and high head height. Also known as heavy hex head bolts or heavy hex structural bolts, these heavy hex heremonly manufactured in high tensile grade 5, 8, 8.8, 10.9, 12.9, a193 grade b7, b7m, b8, b8m, b16, a320 grade l7, l7m, stainless steel and other material. 3 3/4-4 A563 Grade A Heavy Hex Nut Plain. Item Number: 1702061 Price: 1 to 49 for $132.88 / 50+ for $58.78. FMW Fasteners is a premier online provider of anchor products, nuts , bolts, socket products and screws. We stock only premium, contractor grade products by manufacturers you can trust. Heavy Hex Nuts. Heavy Hex Nuts are washer faced, are slightly larger and thicker than standard hex nuts. The heavy hex pattern is typically used for large diameter and high strength bolts. Finish: Plain Galvanized. Grades: A563 Grade A,C,C3,DH,DH3 A194 Grade 2H. Sizes: 1/2″ up to 4″ diameter. Domestic or Foreign are available and in stock!

In addition to the indicated grade marking, all grades , except A563 grades O, A, and B,. Nuts are not required to be marked unless specified by the purchaser. Properties shown are those of nonplated or noncoated coarse thread nuts . Properties shown are those of coarse thread heavy hex nuts .