Shop › Replacement Adjustment Screw and Nut Only, 5/16"-24 threads, Each Image 1 of 1 Replacement Adjustment Screw and Nut Only, 5/16"-24 threads, Each $8.95 Replacement Adjustment Screw and Nut Only, 5/16"-24 threads. Add To Cart Added! Replacement Adjustment Screw and Nut Only, 5/16"-24 threads. C-421-2170-0 You Might Also Like Cylinder Deflector Tin, For 8mm Studs, Zinc Plated 1500-1600cc $2.95 Dual Port Gaskets with alignment hole, Pair $4.50 Sold Out Aluminum Shroud Spacer Kit, Pair $16.95 Under Fender Oil Filter Mount, Type 1, thru 73 $24.95 Piston Ring Set – Cast Top Ring, 88mm (1.5 x 1.5 x 5mm) (Ref. P/N: 311 198 16988) $49.95