Skip to content
Fat Cat Bait & Fishing Supply (Online Sales Dept)
Fat Cat Bait & Fishing Supply (Online Sales Dept)

Marine Plumbing & Ventilation - Thru-Hull Fittings

Filters

$
$
  • Save $14.01 Save $0.00
    $35.00
    $35.00 - $35.00
    $35.00
    $20.99
    $20.99 - $20.99
    $20.99

    GROCO 1" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-1000-W]

    GROCO
    13 in stock

    1" Bronze High Speed Thru-Hull Fitting w/Nut Features: Designed for increased flow compared to standard Thru Hulls and with less drag NPSM / NPT c...

    View full details
    $35.00
    $35.00 - $35.00
    $35.00
    $20.99
    $20.99 - $20.99
    $20.99
    Save $14.01 Save $0.00
  • Save $34.01 Save $0.00
    $86.00
    $86.00 - $86.00
    $86.00
    $51.99
    $51.99 - $51.99
    $51.99

    GROCO 2" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-2000-WS]

    GROCO
    7 in stock

    2" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications: Hos...

    View full details
    $86.00
    $86.00 - $86.00
    $86.00
    $51.99
    $51.99 - $51.99
    $51.99
    Save $34.01 Save $0.00
  • Save $24.01 Save $0.00
    $62.00
    $62.00 - $62.00
    $62.00
    $37.99
    $37.99 - $37.99
    $37.99

    GROCO 1-1/4" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-1250-W]

    GROCO
    18 in stock

    1-1/4" Bronze High Speed Thru-Hull Fitting w/Nut Features: Designed for increased flow compared to standard Thru Hulls and with less drag NPSM / N...

    View full details
    $62.00
    $62.00 - $62.00
    $62.00
    $37.99
    $37.99 - $37.99
    $37.99
    Save $24.01 Save $0.00
  • Save $37.01 Save $0.00
    $94.00
    $94.00 - $94.00
    $94.00
    $56.99
    $56.99 - $56.99
    $56.99

    GROCO 2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-2000-WS]

    GROCO
    9 in stock

    2" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" UL L...

    View full details
    $94.00
    $94.00 - $94.00
    $94.00
    $56.99
    $56.99 - $56.99
    $56.99
    Save $37.01 Save $0.00
  • Save $36.01 Save $0.00
    $90.00
    $90.00 - $90.00
    $90.00
    $53.99
    $53.99 - $53.99
    $53.99

    GROCO 1-1/2" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-1500-W]

    GROCO
    21 in stock

    1-1/2" Bronze High Speed Thru-Hull Fitting w/Nut Features: Designed for increased flow compared to standard Thru Hulls and with less drag NPSM / N...

    View full details
    $90.00
    $90.00 - $90.00
    $90.00
    $53.99
    $53.99 - $53.99
    $53.99
    Save $36.01 Save $0.00
  • Save $16.01 Save $0.00
    $41.00
    $41.00 - $41.00
    $41.00
    $24.99
    $24.99 - $24.99
    $24.99

    GROCO 3/4" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-750-W]

    GROCO
    7 in stock

    3/4" Bronze Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread C83600 Bronze Specifications: Hose Size: 3/4" M...

    View full details
    $41.00
    $41.00 - $41.00
    $41.00
    $24.99
    $24.99 - $24.99
    $24.99
    Save $16.01 Save $0.00
  • Save $28.01 Save $0.00
    $70.00
    $70.00 - $70.00
    $70.00
    $41.99
    $41.99 - $41.99
    $41.99

    GROCO 1-1/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1500-WS]

    GROCO
    8 in stock

    1-1/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" ...

    View full details
    $70.00
    $70.00 - $70.00
    $70.00
    $41.99
    $41.99 - $41.99
    $41.99
    Save $28.01 Save $0.00
  • Save $8.01 Save $0.00
    $21.00
    $21.00 - $21.00
    $21.00
    $12.99
    $12.99 - $12.99
    $12.99

    GROCO 1/2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-500-W]

    GROCO
    15 in stock

    1/2" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B Ava...

    View full details
    $21.00
    $21.00 - $21.00
    $21.00
    $12.99
    $12.99 - $12.99
    $12.99
    Save $8.01 Save $0.00
  • Save $41.01 Save $0.00
    $104.00
    $104.00 - $104.00
    $104.00
    $62.99
    $62.99 - $62.99
    $62.99

    GROCO 1-1/4" 90 Degree Hose Thru-Hull Fitting [HTHC-1250-S]

    GROCO
    Only 1 left!

    1-1/4" 90 Degree Hose Thru-Hull Fitting Features: 90 Degree Barb #316 Stainless Steel Thru Hull with Bronze Hose Connection UL Listed 647B Specif...

    View full details
    $104.00
    $104.00 - $104.00
    $104.00
    $62.99
    $62.99 - $62.99
    $62.99
    Save $41.01 Save $0.00
  • Save $33.01 Save $0.00
    $84.00
    $84.00 - $84.00
    $84.00
    $50.99
    $50.99 - $50.99
    $50.99

    GROCO 1-1/4" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-1250-W]

    GROCO
    3 in stock

    1-1/4" Bronze Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread C83600 Bronze Specifications: Hose Size: 1-1/...

    View full details
    $84.00
    $84.00 - $84.00
    $84.00
    $50.99
    $50.99 - $50.99
    $50.99
    Save $33.01 Save $0.00
  • Save $29.01 Save $0.00
    $73.00
    $73.00 - $73.00
    $73.00
    $43.99
    $43.99 - $43.99
    $43.99

    GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1/2" [HTH-1500]

    GROCO
    20 in stock

    Bronze Hose Barb Thru-Hull Fitting - 1-1/2" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 1-1...

    View full details
    $73.00
    $73.00 - $73.00
    $73.00
    $43.99
    $43.99 - $43.99
    $43.99
    Save $29.01 Save $0.00
  • Save $23.01 Save $0.00
    $59.00
    $59.00 - $59.00
    $59.00
    $35.99
    $35.99 - $35.99
    $35.99

    GROCO 3/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-750-WS]

    GROCO
    16 in stock

    3/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications: H...

    View full details
    $59.00
    $59.00 - $59.00
    $59.00
    $35.99
    $35.99 - $35.99
    $35.99
    Save $23.01 Save $0.00
  • Save $16.01 Save $0.00
    $42.00
    $42.00 - $42.00
    $42.00
    $25.99
    $25.99 - $25.99
    $25.99

    GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/8" [HTH-1125-S]

    GROCO
    10 in stock

    Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/8" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications...

    View full details
    $42.00
    $42.00 - $42.00
    $42.00
    $25.99
    $25.99 - $25.99
    $25.99
    Save $16.01 Save $0.00
  • Save $20.01 Save $0.00
    $52.00
    $52.00 - $52.00
    $52.00
    $31.99
    $31.99 - $31.99
    $31.99

    GROCO 1" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-1000-W]

    GROCO
    6 in stock

    1" Bronze Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread C83600 Bronze Specifications: Hose Size: 1" Mater...

    View full details
    $52.00
    $52.00 - $52.00
    $52.00
    $31.99
    $31.99 - $31.99
    $31.99
    Save $20.01 Save $0.00
  • Save $13.01 Save $0.00
    $34.00
    $34.00 - $34.00
    $34.00
    $20.99
    $20.99 - $20.99
    $20.99

    GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 3/4" [HTH-750-S]

    GROCO
    15 in stock

    Stainless Steel Hose Barb Thru-Hull Fitting - 3/4" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: ...

    View full details
    $34.00
    $34.00 - $34.00
    $34.00
    $20.99
    $20.99 - $20.99
    $20.99
    Save $13.01 Save $0.00
  • Save $19.01 Save $0.00
    $49.00
    $49.00 - $49.00
    $49.00
    $29.99
    $29.99 - $29.99
    $29.99

    GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1/8" [HTH-1125]

    GROCO
    16 in stock

    Bronze Hose Barb Thru-Hull Fitting - 1-1/8" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 1-1...

    View full details
    $49.00
    $49.00 - $49.00
    $49.00
    $29.99
    $29.99 - $29.99
    $29.99
    Save $19.01 Save $0.00
  • Save $40.01 Save $0.00
    $102.00
    $102.00 - $102.00
    $102.00
    $61.99
    $61.99 - $61.99
    $61.99

    GROCO 2" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-2000-W]

    GROCO
    5 in stock

    2" Bronze High Speed Thru-Hull Fitting w/Nut Features: Designed for increased flow compared to standard Thru Hulls and with less drag NPSM / NPT c...

    View full details
    $102.00
    $102.00 - $102.00
    $102.00
    $61.99
    $61.99 - $61.99
    $61.99
    Save $40.01 Save $0.00
  • Save $26.01 Save $0.00
    $67.00
    $67.00 - $67.00
    $67.00
    $40.99
    $40.99 - $40.99
    $40.99

    GROCO 1-1/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1250-WS]

    GROCO
    7 in stock

    1-1/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" ...

    View full details
    $67.00
    $67.00 - $67.00
    $67.00
    $40.99
    $40.99 - $40.99
    $40.99
    Save $26.01 Save $0.00
  • Save $10.01 Save $0.00
    $27.00
    $27.00 - $27.00
    $27.00
    $16.99
    $16.99 - $16.99
    $16.99

    GROCO Bronze Hose Barb Thru-Hull Fitting - 5/8" [HTH-625]

    GROCO
    16 in stock

    Bronze Hose Barb Thru-Hull Fitting - 5/8" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 5/8" ...

    View full details
    $27.00
    $27.00 - $27.00
    $27.00
    $16.99
    $16.99 - $16.99
    $16.99
    Save $10.01 Save $0.00
  • Save $16.01 Save $0.00
    $41.00
    $41.00 - $41.00
    $41.00
    $24.99
    $24.99 - $24.99
    $24.99

    GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1" [HTH-1000-S]

    GROCO
    15 in stock

    Stainless Steel Hose Barb Thru-Hull Fitting - 1" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Ho...

    View full details
    $41.00
    $41.00 - $41.00
    $41.00
    $24.99
    $24.99 - $24.99
    $24.99
    Save $16.01 Save $0.00
  • Save $38.01 Save $0.00
    $95.00
    $95.00 - $95.00
    $95.00
    $56.99
    $56.99 - $56.99
    $56.99

    GROCO Bronze Hose Barb Thru-Hull Fitting - 2" [HTH-2000]

    GROCO
    8 in stock

    Bronze Hose Barb Thru-Hull Fitting - 2" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 2" Mate...

    View full details
    $95.00
    $95.00 - $95.00
    $95.00
    $56.99
    $56.99 - $56.99
    $56.99
    Save $38.01 Save $0.00
  • Save $100.01 Save $0.00
    $252.00
    $252.00 - $252.00
    $252.00
    $151.99
    $151.99 - $151.99
    $151.99

    GROCO 2-1/2" Bronze Combo Scoop Thru-Hull w/Nut [STH-2500-W]

    GROCO
    4 in stock

    2-1/2" Bronze Combo Scoop Thru-Hull w/Nut Features: Designed for increased flow compared to standard Thru Hulls NPSM / NPT combination thread C836...

    View full details
    $252.00
    $252.00 - $252.00
    $252.00
    $151.99
    $151.99 - $151.99
    $151.99
    Save $100.01 Save $0.00
  • Save $27.01 Save $0.00
    $68.00
    $68.00 - $68.00
    $68.00
    $40.99
    $40.99 - $40.99
    $40.99

    GROCO 1" 90 Degree Hose Thru-Hull Fitting [HTHC-1000-S]

    GROCO
    4 in stock

    1" 90 Degree Hose Thru-Hull Fitting Features: 90 Degree Barb #316 Stainless Steel Thru Hull with Bronze Hose Connection UL Listed 647B Specificat...

    View full details
    $68.00
    $68.00 - $68.00
    $68.00
    $40.99
    $40.99 - $40.99
    $40.99
    Save $27.01 Save $0.00
  • Save $31.01 Save $0.00
    $78.00
    $78.00 - $78.00
    $78.00
    $46.99
    $46.99 - $46.99
    $46.99

    GROCO 1-1/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-1250-WS]

    GROCO
    6 in stock

    1-1/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications:...

    View full details
    $78.00
    $78.00 - $78.00
    $78.00
    $46.99
    $46.99 - $46.99
    $46.99
    Save $31.01 Save $0.00

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare