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Marine Plumbing & Ventilation - Thru-Hull Fittings

81 total items

Perko 3/4" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP5]

SKU: 39175

Perko 3/4" Thru-Hull Fitting f/ Hose Plastic Molded White Plastic Broad FlangeTechnical Information: Hose Size Inches: 3/4 Mounting Hole Diameter Inches: 1 Maximum Hull Thickness Inches: 1-7/16 O.D. Flange Inches:...

Perko 3/4" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP5]

SKU: 39175
in stock
60 in stock

Sale price $3.99

Save $3.60

GROCO 1/2" Bronze Combo Scoop Thru-Hull w/Nut [STH-500-W]

SKU: 75329

1/2" Bronze Combo Scoop Thru-Hull w/NutFeatures: Designed for increased flow compared to standard Thru Hulls NPSM / NPT combination thread C83600 Bronze Specifications:Thread NPS: 1/2" Specifications: Hose Size: 1/2" Material: Bronze...

GROCO 1/2" Bronze Combo Scoop Thru-Hull w/Nut [STH-500-W]

SKU: 75329
in stock
9 in stock

Sale price $25.99

Save $11.01

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

SKU: 75343

3/4" Bronze Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread C83600 Bronze Specifications: Hose Size: 3/4" Material: Bronze Box Dimensions: 3"H x 3"W x 7"L WT:...

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

SKU: 75343
in stock
14 in stock

Sale price $27.99

Save $12.01

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

SKU: 75377

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 combination thread C83600 Bronze Specifications: Hose Size: 1"...

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

SKU: 75377
in stock
10 in stock

Sale price $20.99

Save $9.01

GROCO 3/4" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-750-W]

SKU: 75376

3/4" Bronze High Speed Thru-Hull Fitting w/Nut Features: Designed for increased flow compared to standard Thru Hulls and with less drag NPSM / NPT combination thread C83600 Bronze Specifications: Hose Size: 3/4"...

GROCO 3/4" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-750-W]

SKU: 75376
in stock
10 in stock

Sale price $15.99

Save $6.01

Perko 1/2" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP4]

SKU: 39173

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:...

Perko 1/2" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP4]

SKU: 39173
in stock
19 in stock

Sale price $3.99

Save $3.13

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

SKU: 75225

Stainless Steel Hose Barb Thru-Hull Fitting - 1" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Hose Size: 1" Material: Stainless Steel Box Dimensions: 3"H x...

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

SKU: 75225
in stock
21 in stock

Sale price $25.99

Save $11.01

Perko 1-1/8" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP6A]

SKU: 39177

Perko 1-⅛" Thru-Hull Fitting f/ Hose Plastic Molded White Plastic Broad FlangeTechnical Information: Hose Size Inches: 1-1/8 Mounting Hole Diameter Inches: 1-1/2 Maximum Hull Thickness Inches: 1-1/2 O.D. Flange Inches:...

Perko 1-1/8" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP6A]

SKU: 39177
in stock
79 in stock

Sale price $3.99

Save $11.26

Perko 1-1/4" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP7PLB]

SKU: 39170

Perko 1-1/4" 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...

Perko 1-1/4" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP7PLB]

SKU: 39170
in stock
11 in stock

Sale price $51.99

Save $63.98

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

SKU: 75380

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 combination thread C83600 Bronze Specifications: Hose Size: 2"...

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

SKU: 75380
in stock
7 in stock

Sale price $61.99

Save $26.01

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

SKU: 66633

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:...

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

SKU: 66633
in stock
25 in stock

Sale price $5.99

Save $2.35

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

SKU: 74303

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" UL Listed 647B BSPP and Stainless Steel models...

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

SKU: 74303
in stock
6 in stock

Sale price $47.99

Save $20.01

GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 5/8" [HTH-625-S]

SKU: 75223

Stainless Steel Hose Barb Thru-Hull Fitting - 5/8" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Hose Size: 5/8" Material: Stainless Steel Box Dimensions: 3"H x...

GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 5/8" [HTH-625-S]

SKU: 75223
in stock
14 in stock

Sale price $21.99

Save $9.01

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

SKU: 75224

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

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

SKU: 75224
in stock
3 in stock

Sale price $21.99

Save $9.01

GROCO 1/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-500-WS]

SKU: 74299

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...

GROCO 1/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-500-WS]

SKU: 74299
in stock
4 in stock

Sale price $15.99

Save $6.01

GROCO 1" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-1000-WS]

SKU: 75349

1" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications: Material: Stainless Steel Hose Size: 1" Box Dimensions: 5"H x 6"W...

GROCO 1" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-1000-WS]

SKU: 75349
in stock
7 in stock

Sale price $43.99

Save $19.01

GROCO 1-1/2" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-1500-W]

SKU: 75346

1-1/2" Bronze Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread C83600 Bronze Specifications: Hose Size: 1-1/2" Material: Bronze Box Dimensions: 3"H x 3"W x 6"L WT:...

GROCO 1-1/2" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-1500-W]

SKU: 75346
in stock
2 in stock

Sale price $65.99

Save $29.01

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

SKU: 74289

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...

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

SKU: 74289
in stock
8 in stock

Sale price $16.99

Save $7.01

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

SKU: 75378

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 / NPT combination thread C83600 Bronze Specifications: Hose Size: 1-1/4"...

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

SKU: 75378
in stock
8 in stock

Sale price $36.99

Save $16.01

GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1/2" [HTH-500-S]

SKU: 75222

Stainless Steel Hose Barb Thru-Hull Fitting - 1/2" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Hose Size: 1/2" Material: Stainless Steel Box Dimensions: 3"H x...

GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1/2" [HTH-500-S]

SKU: 75222
in stock
11 in stock

Sale price $24.99

Save $11.01