Coupling Nuts

Coupling Nuts

 

Hex couplers are used to connect two pieces of threaded material. Hex and heavy hex couplers are threaded right hand. If a right hand-left hand coupler is needed, consider using a sleeve nut.

*Since hot-dip galvanizing typically adds 2.2 to 5 mils of thickness to the threaded portion of a fastener, galvanized couplers are tapped oversize to compensate for the corrosion resistant coating on the bolts.

Dimensions

Nominal Size F C H
Width Across Flats Width Across Corners Thickness
Basic Max Min Max Min Basic Max Min
1/2 3/4 .75 .736 .866 .839 1-1/2 1.51 1.49
5/8 15/16 .938 .922 1.083 1.051 1-7/8 1.89 1.86
3/4 1-1/8 1.125 1.088 1.299 1.240 2-1/4 2.27 2.22
7/8 1-5/16 1.312 1.269 1.516 1.447 2-5/8 2.65 2.60
1 1-1/2 1.500 1.450 1.732 1.653 3 3.03 2.97
1-1/8 1-11/16 1.688 1.631 1.949 1.859 3-3/8 3.40 3.34
1-1/4 1-7/8 1.875 1.812 2.165 2.066 3-3/4 3.78 3.71
1-3/8 2-1/16 2.062 1.994 2.382 2.273 4-1/8 4.16 4.09
1-1/2 2-1/4 2.250 2.175 2.598 2.480 4-1/2 4.54 4.46

 

 

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