This listing is for twenty pieces. The ND weld nut is a dual-tab spot weld nut for applications requiring additional strength where tension is against the weld. Established as the standard slot fastener in the aluminum extrusion industry (economy t nut). The location of the twin-tabs enables the ND to be used in bridging corners and recessed areas. A precision pilot speeds location and provides a full thread engagement. The ND can use the same electrodes, equipment and settings used in production, thus eliminating setup and changeover time, thereby lowering in-place-fastener cost.          Thread Size    1/4-20Width (in)         1/2Thickness (in)  1/8Length (in)      1-1/8Hole In Sheet (in) 0.312  Material C1010 High-Welding Quality, Low Carbon Steel Plain Finish Threads Unified Standard Class 2B ASME B 1.1-2003       
A   0.500" B   0.125" C   1.125" E   0.297" F   0.050"