Marine Plumbing & Ventilation - Thru-Hull Fittings

106 products


  • Sale -39% GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 2" [HTH-2000-S]

    GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 2" [HTH-2000-S]

    8 in stock

    Stainless Steel Hose Barb Thru-Hull Fitting - 2" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Hose Size: 2" Material: Stainless Steel Box Dimensions: 5"H x 5"W x 5"L WT: 1.55 lbs UPC: 742985139022

    8 in stock

    $104.00$63.50

  • Perko 3/4" Thru-Hull Fitting f/Hose - Plastic Narrow Flange [0301DP5]

    Perko 3/4" Thru-Hull Fitting f/Hose - Plastic Narrow Flange [0301DP5]

    17 in stock

    3/4" Thru-Hull Fitting f/Hose - Plastic Narrow FlangeFeatures: Molded white Narrow Flange Specifications: Hose Size: 3/4" Mounting Hole Diameter: 1" Max. Hull Thickness: 1-7/16" O.D. Flange: 1-1/2" Specifications: Hose Size: 3/4" Material: Plastic Box Dimensions: 2"H x 2"W x 6"L WT: 0.2 lbs UPC: 085226028267

    17 in stock

    $12.50

  • Sale -42% Perko 3/4" Thru-Hull Fitting f/ Hose Bronze MADE IN THE USA [0350005DPP]

    Perko 3/4" Thru-Hull Fitting f/ Hose Bronze MADE IN THE USA [0350005DPP]

    6 in stock

    Perko 3/4" Thru-Hull Connection f/ use with Hose BronzeFlange is machined to fit and grooved to retain bedding compound neck isthreaded to approximately 3/16 inch from flange. Cast bronze, plain or chromed brass Regular or short length versions Regular Length- Fits maximum hull thickness up to 2 inchesShort Length- For thin hull sections up to 5/8 inches maximumTechnical Information Regular Length - Plain Bronze: Hose Size Inches: 3/4 Mounting Hole Diameter Inches: 1 Maximum Hull Thickness Inches: 1-5/8 O.D. Flange Inches: 1-7/8 Model Number: 0350005DPP Ship Weight: 2.9/5.5 lbs. Made in the USA Specifications: Hose Size: 3/4" Material: Bronze Box Dimensions: 1"H x 1"W x 4"L WT: 0.3 lbs UPC: 085226036088

    6 in stock

    $67.77$39.50

  • Sale -32%Last stock! GROCO 3/4" 90 Degree Hose Thru-Hull Fitting [HTHC-750-S]

    GROCO 3/4" 90 Degree Hose Thru-Hull Fitting [HTHC-750-S]

    5 in stock

    3/4" 90 Degree Hose Thru-Hull Fitting Features: 90 Degree Barb #316 Stainless Steel Thru Hull with Bronze Hose Connection UL Listed 647B Specifications: Material: Stainless Steel Hose Size: 3/4" Box Dimensions: 3"H x 3"W x 5"L WT: 0.75 lbs UPC: 742985139282

    5 in stock

    $55.00$37.50

  • Sale -26% GROCO 1" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-1000-W]

    GROCO 1" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-1000-W]

    20 in stock

    1" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B Available with (-W) or without nut (-L) BSPP and Stainless Steel models available Specifications: Hose Size: 1" Material: Bronze Box Dimensions: 3"H x 3"W x 4"L WT: 0.7 lbs UPC: 742985064119

    20 in stock

    $33.00$24.50

  • Sale -37%Last stock! Perko 1/2" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN   THE USA [0322DP4PLB]

    Perko 1/2" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP4PLB]

    4 in stock

    Perko 1/2" Thru-Hull Fitting w/ Pipe Thread BronzeFlange is machined to fit hull and grooved to retain bedding compound. Neckis threaded to approximately 3/8 inch from flange.Cast bronze.Technical Information: Pipe Size Inches: 1/2 Mouting Hole Diameter Inches: 13/16 Maximum Hull Thickness Inches: 1-3/8 O.D. Flange Inches: 1-1/2 Model Number: 0322DP4PLB Ship Weight: 1.8/7.9 lbs. MADE IN THE USA Specifications: Hose Size: 1/2" Material: Bronze Box Dimensions: 1"H x 1"W x 3"L WT: 0.3 lbs UPC: 085226035944

    4 in stock

    $51.96$32.50

  • Perko 1-1/8" Thru-Hull Fitting f/Hose Narrow Flange - Plastic [0301DP6A]

    Perko 1-1/8" Thru-Hull Fitting f/Hose Narrow Flange - Plastic [0301DP6A]

    12 in stock

    1-1/8" Thru-Hull Fitting for Hose Narrow Flange - PlasticFeatures: Molded white Narrow Flange Specifications: Hose Size: 1-1/8" Mounting Hole Diameter: 1-5/16" Max. Hull Thickness: 1-1/2" O.D. Flange: 1-7/8" Specifications: Hose Size: 1-1/8" Material: Plastic Box Dimensions: 2"H x 2"W x 7"L WT: 0.1 lbs UPC: 085226035470

    12 in stock

    $17.50

  • Sale -41% Perko 1" Thru-Hull Fitting f/ Hose Plastic  MADE IN THE USA [0328DP6]

    Perko 1" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP6]

    10 in stock

    Perko 1" Thru-Hull Fitting f/ Hose Plastic Molded White Plastic Broad FlangeTechnical Information: Hose Size Inches: 1 Mounting Hole Diameter Inches: 1-1-5/16 Maximum Hull Thickness Inches: 1-1/2 O.D. Flange Inches: 2-1/4 Model Number: 0328DP6 Ship Weight: 2.0/7.3 lbs. MADE IN THE USA Specifications: Hose Size: 1" Material: Plastic Box Dimensions: 2"H x 2"W x 4"L WT: 0.15 lbs UPC: 085226768507

    10 in stock

    $16.19$9.50

  • Sale -35%Last stock! GROCO 1-1/4" Bronze Combo Scoop Thru-Hull w/Nut [STH-1250-W]

    GROCO 1-1/4" Bronze Combo Scoop Thru-Hull w/Nut [STH-1250-W]

    4 in stock

    1-1/4" Bronze Combo Scoop Thru-Hull w/Nut Features: Designed for increased flow compared to standard Thru Hulls NPSM / NPT combination thread C83600 Bronze Specifications:Thread NPS: 1-1/4" Specifications: Hose Size: 1-1/4" Material: Bronze Box Dimensions: 5"H x 5"W x 5"L WT: 1.9 lbs UPC: 742985063914

    4 in stock

    $86.00$55.50

  • Sale -7%Last stock! Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1"-1-1/4" [930002SS]

    Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1"-1-1/4" [930002SS]

    4 in stock

    Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1"-1-1/4"Thru-hull only for small Pro Series valves; mushroom head, buttress thread Specifications: Hose Size: 1-1/4" Material: Plastic Box Dimensions: 2"H x 2"W x 3"L WT: 0.2 lbs Brochure (pdf)

    4 in stock

    $19.99$18.50

  • Last stock! Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1-1/2"-2" [930003SS]

    Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1-1/2"-2" [930003SS]

    4 in stock

    Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1-1/2"-2"Thru-hull only for small Pro Series valves; mushroom head, buttress thread Specifications: Hose Size: 2" Material: Plastic Box Dimensions: 3"H x 3"W x 3"L WT: 0.2 lbs Brochure (pdf)

    4 in stock

    $20.50

  • Sale -20%Last stock! Attwood Stainless Steel Thru-Hull Short Straight Barbed - 1-1/2" Inner Diameter [66545-3]

    Attwood Stainless Steel Thru-Hull Short Straight Barbed - 1-1/2" Inner Diameter [66545-3]

    5 in stock

    Stainless Steel Thru-Hull Short Straight Barbed - 1-1/2" Inner Diameter Polish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last the life of the boat?Rugged Stainless Construction: Cast from certified Enhanced 316 Stainless Steel alloy for strength and lifetime corrosion-resistance All visible areas are polished to a mirror finish, then passivate each part for additional protection Thick steel sidewalls withstand continual stress and hose flexing Faster, Simpler Installation: Each Thru-Hull is available with a new silicone gasket A channel under the flange holds a bead of sealant, making it easier to apply a trouble-free seal All models have wrench flats or an end notch to hold as a gripping surface; one installer can tighten all connections from inside the hull The barbed tail ends provide plenty of room to hold multiple clamps Stainless Steel Straight Thru-Hulls, BarbedShort Thread is a more compact size, which allows installation near corners and in confined areasSpecifications: Hose size: (inch) 1-1/2" inner diameter Flange Diameter: (inch) 3" Thread O.D. (outside diameter): (inch) 1-7/8"  Thread Length: (inch) 1-1/4" Barb Length: (inch) 1-1/2" Total Length: (inch) 3-1/8" Install Hole Saw Size: (inch) 2"  Thread NPSM: (inch) 1-1/2" Max Hull Thickness: (inch) 5/8" *Stainless Steel Thru-Hull Connectors are designed for installation above the water line only Specifications: Hose Size: 1-1/2" Material: Stainless Steel Box Dimensions: 3"H x 3"W x 3"L WT: 1.2 lbs UPC: 022697665454 Quick Guide (pdf)

    5 in stock

    $61.99$49.50

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