SAE #130238 HnF SKU Thread (inch) A (inch) B (inch) HF2200P-02-02 1/8 0.55 0.56 HF2200P-04-04 1/4 0.78 0.68 HF2200P-06-06 3/8 0.84 0.81 HF2200P-08-08 1/2 1.09 1.00 HF2200P-12-12 3/4 1.25 1.25