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Marine Plumbing & Ventilation - Thru-Hull Fittings

Rugged thru-hull fittings for secure water intake and discharge connections.

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  • GROCO 1/2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-500-W]
    GROCO
    GROCO 1/2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-500-W]
    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 Available with (-W) or without nut (-L) BSPP and Stainless Steel models available Specifications: Hose Size: 1/2" Material: Bronze Box Dimensions: 3"H...
    $17.99
    $21.00
    $17.99
  • GROCO 1" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1000-WS]
    GROCO
    GROCO 1" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1000-WS]
    1" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" UL Listed 647B BSPP and Stainless Steel models available Specifications: Hose Size: 1" Material: Stainless Steel Box Dimensions: 3"H x 3"W x...
    $46.99
    $60.00
    $46.99
  • GROCO 1-1/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1250-WS]
    GROCO
    GROCO 1-1/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1250-WS]
    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" UL Listed 647B BSPP and Stainless Steel models available Specifications: Hose Size: 1-1/4" Material: Stainless Steel Box Dimensions: 5"H x 5"W x...
    $52.99
    $67.00
    $52.99
  • GROCO 1-1/2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-1500-W]
    GROCO
    GROCO 1-1/2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-1500-W]
    1-1/2" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B Available with (-W) or without nut (-L) BSPP and Stainless Steel models available Specifications: Hose Size: 1-1/2" Material: Bronze Box Dimensions: 3"H...
    $55.99
    $71.00
    $55.99
  • GROCO 3/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-750-WS]
    GROCO
    GROCO 3/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-750-WS]
    3/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" UL Listed 647B BSPP and Stainless Steel models available Specifications: Hose Size: 3/4" Material: Stainless Steel Box Dimensions: 3"H x 3"W x...
    $17.99
    $21.00
    $17.99
  • GROCO 2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-2000-W]
    GROCO
    GROCO 2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-2000-W]
    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 Available with (-W) or without nut (-L) BSPP and Stainless Steel models available Specifications: Hose Size: 2" Material: Bronze Box Dimensions: 4"H...
    $80.99
    $107.00
    $80.99
  • Perko Thru-Hull Scupper f/Mounting Through Transom [0323DP]
    Perko
    Perko Thru-Hull Scupper f/Mounting Through Transom [0323DP]
    Thru-Hull Scupper for Mounting Through TransomFeatures: Molded White Polymer Soft Black Flapper Nut and Mounting Hardware Included Specifications: Hose Size: 1-1/2" Mounting Hole Diameter: 1-7/8" Max. Hole Thickness: 2-1/8" O.D. Flange: 2-7/8" Specifications: Hose Size: 1-1/2" Material: Plastic Box Dimensions: 4"H x 6"W x...
    $43.99
    $60.09
    $43.99
  • Attwood Plastic Thru-Hull Fitting - 1-1/2" - White [3875-3]
    Attwood Marine
    Attwood Plastic Thru-Hull Fitting - 1-1/2" - White [3875-3]
    Plastic Thru-Hull Fitting - 1-1/2" - WhiteThese thru-hulls are made with a durable, thermoplastic construction which prevents electrolysis.Caution: Thru-Hull connectors are designed for installation above the water line only.Specifications: Fits Hose Size: 1-1/2" I.D. Stem Length: 3-1/2" Max. Hull Thickness: 1-1/4" Flange Diameter: 3"...
    $9.99
    $9.99
  • Perko 3/4" Thru-Hull Fitting f/Hose - Plastic Narrow Flange [0301DP5]
    Perko
    Perko 3/4" Thru-Hull Fitting f/Hose - Plastic Narrow Flange [0301DP5]
    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:...
    $7.99
    $8.86
    $7.99
  • Perko 1-1/8" Thru-Hull Fitting f/Hose Narrow Flange - Plastic [0301DP6A]
    Perko
    Perko 1-1/8" Thru-Hull Fitting f/Hose Narrow Flange - Plastic [0301DP6A]
    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...
    $10.99
    $16.76
    $10.99
  • Perko 3/4" Thru-Hull Fitting w/Pipe Thread Bronze Extra Long - Max Hull 5" Thick [0348DP5PLB]
    Perko
    Perko 3/4" Thru-Hull Fitting w/Pipe Thread Bronze Extra Long - Max Hull 5" Thick [0348DP5PLB]
    Extra Long Thru-Hull Connection for Use with PipePart #: 0348DP5PLBFlange is machined to fit the hull and grooved to retain bedding compound neck is threaded to approximately 3/8 inch from flange.Material:Cast Bronze Specifications: Hose Size: 3/4" Material: Bronze Box Dimensions: 2"H x 2"W x...
    $83.99
    $118.72
    $83.99
  • Perko 1-1/8" Thru-Hull Fitting f/ Hose Chrome Plated Bronze Made in the USA [035006ADPC]
    Perko
    Perko 1-1/8" Thru-Hull Fitting f/ Hose Chrome Plated Bronze Made in the USA [035006ADPC]
    Perko 1-1/8" Thru-Hull Connection f/ use with Hose Chrome Plated 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 versons Regular Length- Fits maximum...
    $79.99
    $113.32
    $79.99
  • Perko 1" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP6PLB]
    Perko
    Perko 1" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP6PLB]
    Perko 1" 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 Mouting Hole Diameter Inches: 1-5/16 Maximum Hull Thickness Inches: 1-7/8 O.D....
    $63.99
    $87.56
    $63.99
  • Perko 1-1/8" Thru-Hull Fitting f/ Hose Bronze Made in the USA [035006ADPP]
    Perko
    Perko 1-1/8" Thru-Hull Fitting f/ Hose Bronze Made in the USA [035006ADPP]
    Perko 1-1/8" Thru-Hull Connection f/ use with Hose BronzeFlange is machined to fit and grooved to retain bedding compound neck is threaded to approximately 3/16 inch from flange. Cast bronze, plain or chromed brass Regular or short length versons Regular Length- Fits maximum hull...
    $64.99
    $88.08
    $64.99
  • Perko 1-1/4" Thru-Hull Fitting f/Hose Bronze MADE IN THE USA [0350007DPP]
    Perko
    Perko 1-1/4" Thru-Hull Fitting f/Hose Bronze MADE IN THE USA [0350007DPP]
    Perko 1-1/4" 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...
    $94.99
    $133.88
    $94.99
  • Perko 3/4" Thru-Hull Fitting f/ Hose Bronze MADE IN THE USA [0350005DPP]
    Perko
    Perko 3/4" Thru-Hull Fitting f/ Hose Bronze MADE IN THE USA [0350005DPP]
    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...
    $49.99
    $67.77
    $49.99
  • Perko 1-1/2" Thru-Hull Fitting f/ Hose Bronze Made in the USA [0350008DPP]
    Perko
    Perko 1-1/2" Thru-Hull Fitting f/ Hose Bronze Made in the USA [0350008DPP]
    Perko 1-1/2" 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 versons Regular Length- Fits maximum hull thickness...
    $115.99
    $164.41
    $115.99
  • Perko 1-1/2" Thru-Hull Fitting f/Hose Plastic MADE IN THE USA [0328DP8]
    Perko
    Perko 1-1/2" Thru-Hull Fitting f/Hose Plastic MADE IN THE USA [0328DP8]
    Perko 1-1/2" Thru-Hull Fitting for Hose Plastic Molded White Plastic Broad FlangeTechnical Information: Hose Size Inches: 1-1/2 Mounting Hole Diameter Inches: 1-7/8 Maximum Hull Thickness Inches: 1-7/8 O.D. Flange Inches: 3 MADE IN THE USA Specifications: Hose Size: 1-1/2" Material: Plastic Box Dimensions: 2"H...
    $17.99
    $21.76
    $17.99
  • Perko 5/8" Thru-Hull Fitting f/ Hose Chrome Plated Bronze MADE IN THE USA [0350004DPC]
    Perko
    Perko 5/8" Thru-Hull Fitting f/ Hose Chrome Plated Bronze MADE IN THE USA [0350004DPC]
    Perko 5/8" Thru-Hull Connection f/ use with Hose Chrome PlatedBronzeFlange 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...
    $40.99
    $66.39
    $40.99
  • Perko 8" x 5-1/8" Scoop Strainer Bronze MADE IN THE USA [0066DP4PLB]
    Perko
    Perko 8" x 5-1/8" Scoop Strainer Bronze MADE IN THE USA [0066DP4PLB]
    Perko 8" x 5-1/8" Scoop Strainer BronzeCast bronzeMachine slotsTechnical Information: For Thru-Hull Size Inches: 3/8 & 1/2 Dimensions Strainer Inches: 3-1/2 X 2-1/2 Model Number: 0066DP1PLB Ship Weight: 2.0/1.8 lbs. Screw Size: #8
    $80.99
    $114.05
    $80.99

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