![Attwood Stainless Steel Thru-Hull Short Straight Barbed - 1" Inner Diameter [66542-3]](https://cdn.shopify.com/s/files/1/0704/3376/7726/files/98084XL.jpg?v=1739463316)
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Attwood Stainless Steel Thru-Hull Short Straight Barbed - 1" Inner Diameter [66542-3]Stainless Steel Thru Hull Short Straight Barbed 1" 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
Stainless Steel Thru-Hull Short Straight Barbed - 1" 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, Barbed
- Short Thread is a more compact size, which allows installation near corners and in confined areas
Specifications:
- Hose size: (inch) 1" inner diameter
- Flange Diameter: (inch) 2-1/4"
- Thread O.D. (outside diameter): (inch) 1-3/8"
- Thread Length: (inch) 1-1/8"
- Barb Length: (inch) 1"
- Total Length: (inch) 2-1/2"
- Install Hole Saw Size: (inch) 1-1/2"
- Thread NPSM: (inch) 1"
- Max Hull Thickness: (inch) 5/8"
*Stainless Steel Thru-Hull Connectors are designed for installation above the water line only
Specifications:
- Hose Size: 1"
- Material: Stainless Steel
- Box Dimensions: 2"H x 3"W x 3"L WT: 0.6 lbs
- UPC: 022697665423
Quick Guide (pdf)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 904 reviews
Sort
Product Reviews
★★★★★ 5
Good stuff !
Model: 36 SqFt(3.4 SqM), Model: 36 SqFt(3.4 SqM)
This is an excellent product. Easily moldable, cuttable with good scissors or razor knife, very sticky, works great.
This pack was enough to do all 4 doors on a crew max truck, and I went wild on the fronts. I used 9 peices on each rear door which was just enough, and the rest on the fronts. I doubled up layers and even used some on the back of the door panels. If you follow the instructions and dont go wild you might even have extra left over.
It works just like you would imagine. Without doing the entire cab there will still be road noise but this helped noise, better audio, no buzzing door panels, terrific improvement.
It is kind of heavy, so extra weight is added to truck, but that really isnt a bad thing. It is noticable but in a good way.
Get it. Use it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 20, 2026
★★★★★ 4
Good product
Model: 36 SqFt(3.4 SqM)
Easy to roll out. Works great
Why did you pick this product vs others?:
Fair price for the amount of coverage, good quality
Works well:
Easy to install, rolls out great. Forms to contours well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2025
★★★★★ 5
Great product
Model: 36 SqFt(3.4 SqM)
I used this on the doors of a Toyota Tacoma, worked as it described. Reduced the road noise significantly.. Need to buy another box for the floor and roof of the truck..
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
★★★★★ 5
Great product - Add foam product for complete solution
Model: 36 SqFt(3.4 SqM)
Used in two cars with speaker upgrades. Easy to install but get the roller for assured adhesion.removes "tinnyness" from large metal resonators. Use with foam absorptive material for a complete system.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
★★★★★ 5
Great Product for noise reduction in Auto Use.
Model: 36 SqFt(3.4 SqM)
I use this on many builds to dampen the metal echo in cars, vans, and trucks. Just one sheet in the center of a body panel is a huge difference maker. You can also cover the entire surface and get added insulation value. The noise is greatly depleted and it's easy to install with a roller tool. Looks Great when done. Good Product I will use again!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 29, 2025
recommand products
Switchback Shank Open Range with Roller
324.98
MRCOOL DIY 5th Gen Multi-Zone 5-Zone 48,000 BTU 22 SEER2 (9K + 12K + 12K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump
3535.00
Boy's Aztec Print by Rock & Roll ~ Blue
42.95
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 27,000 BTU 23 SEER2 (6K + 6K + 6K + 6K) Ductless Mini-Split Air Conditioner and Heat Pump
1983.50
MRCOOL DIY 5th Gen Multi-Zone 4-Zone 36,000 BTU 23 SEER2 (12K + 12K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump
2676.00