Skip to product information
1 of 1

Brand: Attwood Marine

Attwood Marine Stainless Steel Thru-Hull Fitting, 5/8 in. Straight Barbed

Attwood Marine Stainless Steel Thru-Hull Fitting, 5/8 in. Straight Barbed

Regular price $25.48
Regular price Sale price $25.48
Sale Sold out
Shipping calculated at checkout.

Last one

About this product

This Attwood Marine standard thru-hull fitting is crafted from durable 316 stainless steel to provide long-lasting corrosion resistance. Designed with a polished mirror finish, this straight, barbed connector is built for strength and reliability in marine plumbing systems.

Key Features:

  • Constructed from 316 stainless steel alloy with thick sidewalls for durability
  • Features a channel under the flange for consistent sealant application
  • Wrench flats and end notch included for single-person installation
  • Barbed tail design accommodates multiple hose clamps
  • Designed for installation above the water line only

Specifications:

  • Hose size: 5/8 in. inner diameter
  • Flange diameter: 1-7/8 in.
  • Thread O.D.: 1 in.
  • Thread length: 2 in.
  • Barb length: 1-1/4 in.
  • Total length: 3-3/4 in.
  • Install hole saw size: 1-1/8 in.
  • Thread NPSM: 3/4 in.
  • Maximum hull thickness: 1-1/16 in.
  • Model number: 66546-3
Quantity
  • Secure checkout
  • 21-day return requests
  • Free standard shipping $100+

Product facts

CT SKU
CT-112363
Model / MPN
66546-3
UPC / GTIN
022697665461
Package dimensions (H × W × L)
2" X 3" X 6"
Package weight
0.5 lb
Country of origin
THAILAND

Specifications

Hose Size
5/8"
Material
Stainless Steel
Type
Attwood Stainless Steel Thru-Hull Standard Straight Barbed -

Fit-sensitive item: confirm measurements, model numbers, and manufacturer details before ordering. Tug & Tow does not guarantee universal compatibility from a product page alone.

Shipping & returns

Request an eligible return within 21 calendar days after delivery. Every physical return requires written approval and an RMA number and must be shipped within five business days after the RMA is issued. The customer pays return shipping for an ordinary return. Tug & Tow provides prepaid return shipping for a verified damaged, defective, short, or incorrect shipment. We do not charge a restocking fee. See Shipping & Returns for eligibility, exclusions, and details.

Fit & compatibility

Review the product title, description, images, dimensions, part numbers, and manufacturer details before purchase. For fit-sensitive items, confirm compatibility with your boat, RV, trailer, vehicle, or equipment.

Need help choosing?

Send us the product link or SKU, plus details about your boat, RV, trailer, vehicle, or project. We will help you narrow down the right option when product fit is not obvious.