Whitecap Duplex Stainless Steel 90 Degree Thru-Hull w/ Barb
This Whitecap Duplex Stainless Steel 90 Degree Thru-Hull is available in a variety of sizes and includes a barb. These thru-hulls are constructed of durable stainless steel that is more dense and has greater rust resistance than the traditional 316 stainless steel. Specifications:
| Part Number | Hose Size | Flange O.D. | Thread Length | Barb Length | Overall Length | Cut-Out | Max Hull Thickness |
| 6576X | 5/8″ | 1-7/8″ | 1-5/8″ | 7/8″ | 3-1/8″ | 1-5/16″ | 1-1/4″ |
| 6577X | 3/4″ | 1-7/8″ | 1-5/8″ | 1-5/16″ | 3-1/8″ | 1-5/16″ | 1-1/4″ |
| 6578X | 1″ | 1-7/8″ | 1-5/8″ | 1-1/8″ | 3-1/2″ | 1-5/16″ | 1-1/4″ |
| 6579X | 1-1/8″ | 1-7/8″ | 1-5/8″ | 1-1/2″ | 3-1/2″ | 1-5/16″ | 1-1/4″ |
| 6580X | 1-1/4″ | 2-3/8″ | 1-5/8″ | 1-1/2″ | 4″ | 1-1/2″ | 1-1/4″ |
| 6581X | 1-1/2″ | 2-3/8″ | 1-5/8″ | 1-1/2″ | 4″ | 1-1/2″ | 1-1/4″ |
California Residents: WARNINGCancer and Reproductive Harm – P65Warnings.ca.gov
![Scanstrut Camera Mast Mount f/FLIR M300 Series [CAM-MM-03]](https://www.marinerailparts.com/wp-content/uploads/2026/10/scanstrut-camera-mast-mount-f-flir-m300-series-cam-mm-03.webp)
![NavPod AG118 Pedestal Guard [AG118]](https://www.marinerailparts.com/wp-content/uploads/2026/10/navpod-ag118-pedestal-guard-ag118.webp)
![RAM Mount 2" Max Width Square Rail Base w/1" Ball [RAM-B-247U-2]](https://www.marinerailparts.com/wp-content/uploads/2026/10/ram-mount-2-max-width-square-rail-base-w-1-ball-ram-b-247u-2.webp)