Sea-Dog 5/16 in Screw Pin D-Shackle, 316 Stainless
Sea-Dog 5/16 in Screw Pin D-Shackle, 316 Stainless — Product description
This is the Sea-Dog screw pin D-shackle in 316 stainless steel, with a 5/16 inch pin and an 11/16 inch ring. It's the kind of simple, strong connector you reach for again and again, joining an anchor rode to chain, shackling a block to a padeye, or rigging a line on deck. Threads apart by hand, holds tight once you snug it down.
A D-shackle earns its keep by being predictable. The straight sides and U-shape rounded bottom keep the load running in a straight line, which is exactly what you want when you're connecting an anchor rode to chain or hanging a block off a padeye. This Sea-Dog version is cast from 316 stainless steel, so it shrugs off salt spray and stays bright season after season.
The screw pin is the handy part. It threads all the way out when you need to open the shackle, then snugs back down by hand. No special tools, no fuss. Just remember to seize the pin with a bit of wire or thread-locker if the shackle is headed somewhere it'll see constant motion, because a screw pin can back off over time.
With a 5/16 inch pin and an 11/16 inch ring, it fits a lot of the everyday rigging jobs on small and midsize boats. It's sold as a single shackle.
Key Features
- 316 stainless steel casting for marine-grade corrosion resistance in saltwater
- Screw pin threads fully out by hand for quick connect and disconnect, no tools needed
- 5/16 inch pin size
- 11/16 inch ring size
- D-shape body with straight sides and U-shape rounded bottom for straight-line loading
Why Buy from NVN Marine
- Authorized Sea-Dog reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Screw Pin; 5/16 Inch Pin Size; 11/16 Inch Ring Size; 316 Stainless Steel; Straight Sides With U-Shape Rounded Bottom D-Shackle; Single |
|---|---|
| Brand | Sea-Dog |
| Manufacturer Part Number | 147008-1 |
| UPC | 035514147095 |
| Pin Type | Screw Pin |
| Pin Size | 5/16 Inch |
| Ring Size | 11/16 Inch |
| Material | 316 Stainless Steel |
| Shackle Type | D-Shackle |
| Body Shape | Straight Sides with U-Shape Rounded Bottom |
| Quantity | Single |
Frequently asked questions
What is this shackle made of?
316 stainless steel. It's the marine-grade alloy, so it handles saltwater and spray far better than plated or lower-grade stainless, and it keeps its shine season after season.
What does screw pin mean?
The pin threads in and out by hand. You back it all the way out to open the shackle, then thread it home and snug it down to close. No tools required. If it'll see constant motion, seize the pin so it can't work loose.
What size is it?
The pin is 5/16 inch and the ring opening is 11/16 inch. That covers a lot of common anchor rode, chain, and deck rigging connections on small and midsize boats.
Does it come as a pair?
No, this is sold as a single shackle.
