
Originally Posted by
Brian Hjelm
NS is National Special. NF & NC are National Fine and National Coarse, the standard forms of the the American National system. NS is to be used only when a standard thread is not adequate. In this case, steering rods, the size has been in use since before rationalistion in about 1949 when 11/16 became an obsolete size to be used only as necessary when a standard would not be adequate.
LR/RR steering rods are 11/16" x 16tpi NS, left hand and right hand. I have both taps and dies in right and left hand available exstock. Taps are intermediate lead, and the dies are 1 1/2" diameter. Both taps and dies are High Speed Steel. Taps $16 RH, $30 LH, dies are $20 RH, $35 LH. Plusd postage.
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