Mercury outboard spare part 30506 (NUT (.250-28)). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 200 HP XS 6 CYL (2.5L), 225 HP Pro XS 6 CYL (3.0L), 3.5 HP, 250 HP Pro XS 6 CYL (3.0L), S2000, SST 120, V-150 Magnum, V-150 Marathon, V-150 Work, V-150-XR-2, V-1500, 225X EFI PROMAX, S3000. Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 30506 (NUT (.250-28)), documented in 12 exploded diagram location(s), across the 2-STROKE-CARB, 2-STROKE-DFI-OPTIMAX, 2-STROKE-EFI series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 2-STROKE-CARB3-5-hp6202173 THRU 0A809600152View
Mercury 2-STROKE-CARB3-5-hpARCHIVE CAT 822366152View
Mercury 2-STROKE-CARBs20000D030200 UP615View
Mercury 2-STROKE-CARBsst-1200D030200 UP615View
Mercury 2-STROKE-CARBv-150-magnum5600162 THRU 0A904645406View
Mercury 2-STROKE-CARBv-150-marathon5600162 THRU 0A904645406View
Mercury 2-STROKE-CARBv-150-work4868998 THRU 0A904645406View
Mercury 2-STROKE-CARBv-150-xr-24868998 THRU 0A904645406View
Mercury 2-STROKE-CARBv-15004868998 THRU 0A904645406View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-pro-xs-6-cyl-3-0l1B752547 THRU 2B535608366View
Mercury 2-STROKE-EFI225x-efi-promax0T430254 THRU 0T819605516View
Mercury 2-STROKE-EFIs30000D181027 THRU 0T105373615View

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Appears in diagrams of these models

  • 200 HP XS 6 CYL (2.5L)
  • 225 HP Pro XS 6 CYL (3.0L)
  • 3.5 HP
  • 250 HP Pro XS 6 CYL (3.0L)
  • S2000
  • SST 120
  • V-150 Magnum
  • V-150 Marathon
  • V-150 Work
  • V-150-XR-2
  • V-1500
  • 225X EFI PROMAX
  • S3000