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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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  • Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 3/4" Inner Diameter [66547-3]
    Attwood Marine
    Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 3/4" Inner Diameter [66547-3]
    Stainless Steel Thru-Hull Standard Straight Barbed - 3/4" Inner DiameterPolish 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...
    $27.99
    $29.99
    $27.99
  • Perko 1/2" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP4]
    Perko
    Perko 1/2" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP4]
    Perko 1/2" Thru-Hull Fitting f/ Hose Plastic Molded White Plastic Broad FlangeTechnical Information: Hose Size Inches: 1/2 Mounting Hole Diameter Inches: 13/16 Maximum Hull Thickness Inches: 1-1/4 O.D. Flange Inches: 1-1/2 Model Number: 0328DP4 Ship Weight: 1.0/5.8 lbs. MADE IN THE USA Specifications: Hose...
    $6.99
    $7.57
    $6.99
  • Perko 3-1/2" x 2-1/2" Scoop Strainer Bronze MADE IN THE USA [0066DP1PLB]
    Perko
    Perko 3-1/2" x 2-1/2" Scoop Strainer Bronze MADE IN THE USA [0066DP1PLB]
    Perko 3-1/2" X 2-1/2" 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
    $22.99
    $35.86
    $22.99
  • GROCO 3/4" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-750-W]
    GROCO
    GROCO 3/4" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-750-W]
    3/4" 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: 3/4" Material: Bronze Box Dimensions: 3"H...
    $19.99
    $23.00
    $19.99
  • Attwood Stainless Steel Scupper Valve Barbed - 1-1/2" Hose Size [66553-3]
    Attwood Marine
    Attwood Stainless Steel Scupper Valve Barbed - 1-1/2" Hose Size [66553-3]
    Stainless Steel Scupper Valve Barbed - 1-1/2" Hose SizePolish 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...
    $80.99
    $99.99
    $80.99
  • Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1" Inner Diameter [66548-3]
    Attwood Marine
    Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1" Inner Diameter [66548-3]
    Stainless Steel Thru-Hull Standard Straight Barbed - 1" Inner DiameterPolish 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...
    $29.99
    $34.99
    $29.99
  • GROCO 1-1/4" 90 Degree Hose Thru-Hull Fitting [HTHC-1250-S]
    GROCO
    GROCO 1-1/4" 90 Degree Hose Thru-Hull Fitting [HTHC-1250-S]
    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 Specifications: Hose Size: 1-1/4" Material: Stainless Steel Box Dimensions: 5"H x 6"W x 6"L WT: 1.15 lbs UPC: 742985139305
    $79.99
    $106.00
    $79.99
  • GROCO 1/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-500-WS]
    GROCO
    GROCO 1/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-500-WS]
    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" UL Listed 647B BSPP and Stainless Steel models available Specifications: Hose Size: 1/2" Material: Stainless Steel Box Dimensions: 3"H x 3"W x...
    $18.99
    $22.00
    $18.99
  • GROCO 1-1/4" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-1250-W]
    GROCO
    GROCO 1-1/4" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-1250-W]
    1-1/4" Bronze Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread C83600 Bronze Specifications: Hose Size: 1-1/4" Material: Bronze Box Dimensions: 3"H x 3"W x 6"L WT: 1.8 lbs UPC: 742985141766
    $65.99
    $84.00
    $65.99
  • GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1/2" [HTH-1500]
    GROCO
    GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1/2" [HTH-1500]
    Bronze Hose Barb Thru-Hull Fitting - 1-1/2" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 1-1/2" Material: Bronze Box Dimensions: 3"H x 3"W x 4"L WT: 1.25 lbs UPC: 742985005242
    $56.99
    $73.00
    $56.99
  • GROCO 3" Bronze Thru-Hull Fitting w/Nut [TH-3000-W]GROCO 3" Bronze Thru-Hull Fitting w/Nut [TH-3000-W]
    GROCO
    GROCO 3" Bronze Thru-Hull Fitting w/Nut [TH-3000-W]
    3" Bronze Thru-Hull Fitting with NutHigher flow rates are possible with this 3" GROCO thru-hull fitting than conventional thru-hulls.Features: NPSM / NPT combination thread C83600 Bronze UL listed 647B Includes nut  BSPP and stainless steel models are available Specifications:Thread NPS: 3" Specifications: Hose Size:...
    $226.99
    $313.00
    $226.99
  • GROCO 2-1/2" Bronze Thru-Hull Fitting w/Nut [TH-2500-W]GROCO 2-1/2" Bronze Thru-Hull Fitting w/Nut [TH-2500-W]
    GROCO
    GROCO 2-1/2" Bronze Thru-Hull Fitting w/Nut [TH-2500-W]
    2-1/2" Bronze Thru-Hull Fitting with NutHigher flow rates are possible with this 2-1/2" GROCO thru-hull fitting than conventional thru-hulls.Features: NPSM / NPT combination thread C83600 Bronze UL listed 647B Includes nut  BSPP and stainless steel models are available Specifications:Thread NPS: 2-1/2" Specifications: Hose Size:...
    $157.99
    $218.00
    $157.99
  • Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/8" Inner Diameter [66549-3]
    Attwood Marine
    Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/8" Inner Diameter [66549-3]
    Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/8" Inner DiameterPolish 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...
    $34.99
    $39.99
    $34.99
  • Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 5/8" Inner Diameter [66546-3]
    Attwood Marine
    Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 5/8" Inner Diameter [66546-3]
    Stainless Steel Thru-Hull Standard Straight Barbed - 5/8" Inner DiameterPolish 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...
    $26.99
    $27.99
    $26.99
  • Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/2" Inner Diameter [66551-3]
    Attwood Marine
    Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/2" Inner Diameter [66551-3]
    Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/2" Inner DiameterPolish 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...
    $49.99
    $59.99
    $49.99
  • Attwood Stainless Steel Thru-Hull Short Straight Barbed - 3/4" Inner Diameter [66541-3]
    Attwood Marine
    Attwood Stainless Steel Thru-Hull Short Straight Barbed - 3/4" Inner Diameter [66541-3]
    Stainless Steel Thru-Hull Short Straight Barbed - 3/4" Inner DiameterPolish 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...
    $26.99
    $28.99
    $26.99
  • Attwood Stainless Steel Thru-Hull Short Straight Barbed - 1-1/2" Inner Diameter [66545-3]
    Attwood Marine
    Attwood Stainless Steel Thru-Hull Short Straight Barbed - 1-1/2" Inner Diameter [66545-3]
    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...
    $51.99
    $61.99
    $51.99
  • Attwood White Plastic Thru-Hull Fitting - 1-1/8" Inner Diameter [3874-3]
    Attwood Marine
    Attwood White Plastic Thru-Hull Fitting - 1-1/8" Inner Diameter [3874-3]
    White Plastic Thru-Hull Fitting - 1-1/8" Inner DiameterThis thru-hull fitting is made with a durable, thermoplastic construction, which prevents electrolysis.Specifications: Hose Size: (inch) 1-1/8" Inner diameter Stem Length: (inch) 3-1/4" Max Hull Thickness: (inch) 1-1/4" Flange Diameter: (inch) 2-1/4" Installation Hole Size: (inch) 1-3/8"...
    $9.99
    $9.99
  • Attwood White Plastic 90 Degree Thru-Hull Connector - 3/4" Inner Diameter [3877-3]
    Attwood Marine
    Attwood White Plastic 90 Degree Thru-Hull Connector - 3/4" Inner Diameter [3877-3]
    White Plastic 90 Degree Thru-Hull Connector - 3/4" Inner Diameter90° Thru-Hulls are ideal for tight installations, such as livewell overflow drains. The angled design also eliminates hose kinking.Specifications: Fits Hose Size: (inch) 3/4"inner diameter Max Hull Thickness: (inch) 1" Flange Diameter: (inch) 1-1/2" Installation...
    $9.99
    $9.99
  • GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1/8" [HTH-1125]
    GROCO
    GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1/8" [HTH-1125]
    Bronze Hose Barb Thru-Hull Fitting - 1-1/8" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 1-1/8" Material: Bronze Box Dimensions: 3"H x 3"W x 4"L WT: 0.7 lbs UPC: 742985103979
    $38.99
    $49.00
    $38.99

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