YF 1 Barrel Screw Sizes A-10-32×5/8 80D83, B 3-48×1/4 80D1 C-10-28×3/4, D-3-48×1/4 80D1, E-10-32×3/8 S103238, F-3/16-28x 3/4 N/A Updated on 04/13/2022 Was this article helpful? Yes No Related Articles Carter YF, YFA Build and Spec Sheets Carter YF & YFA Adjustments Carter YFA Screw Specs Carter YF & YFA Jet Sizes Carter YF Accelerator Pump Carter YFA Feedback Exploded View Need Support?Can't find the answer you're looking for?Contact Support