Identify Sea-Dog Cast Stainless Shackles by Shape and Size
When sorting a loose assortment of marine shackles, the body shape and the manufacturer number are more dependable than an estimated pin size alone. These seven Sea-Dog models have 316 stainless, investment-cast bodies. The 147006/147008/147010 group is D-shaped; the 147056/147058/147060/147062 group is the rounded bow design.
Recognize the two shackle patterns
D shackles: narrower sides
The 147006-1, 147008-1 and 147010-1 family has straight sides and a U-shaped rounded end. Match the original body and the mating connection clearance.
Bow shackles: rounded body
The 147056-1, 147058-1, 147060-1 and 147062-1 family has a visibly wider rounded outline with a removable screw pin for repeated connection and disconnection.
Read the manufacturer number and nominal size
| Sea-Dog MPN | Body shape | Manufacturer size A | Construction |
|---|---|---|---|
| 147006-1 | Straight-sided D | 1/4 in | Investment-cast 316 stainless steel |
| 147008-1 | Straight-sided D | 5/16 in | Investment-cast 316 stainless steel |
| 147010-1 | Straight-sided D | 3/8 in | Investment-cast 316 stainless steel |
| 147056-1 | Rounded bow | 1/4 in | Investment-cast 316 stainless steel |
| 147058-1 | Rounded bow | 5/16 in | Investment-cast 316 stainless steel |
| 147060-1 | Rounded bow | 3/8 in | Investment-cast 316 stainless steel |
| 147062-1 | Rounded bow | 7/16 in | Investment-cast 316 stainless steel |
“Size A” follows Sea-Dog's dimension labels. Compare the full shackle dimensions and the mating hardware—not just the listed size—before selecting a replacement.
Important: no manufacturer's load rating. Sea-Dog specifically states that these investment-cast D and bow shackles are not load rated. Do not infer a safe working load from the diameter, stainless grade or appearance. For any connection requiring a rated working load, use an appropriately documented, rated component selected for that application.
Inspect and identify before using
- Find the exact 147xxx-1 MPN on the package or original records. Compare shape and size with the manufacturer's table.
- Confirm the pin threads are undamaged and can tighten fully. Check for missing or substituted pins.
- Inspect for cracks, bending, pitting, flattened bearing surfaces and signs of previous overload.
- Do not assume that a cast stainless part is rated for hoisting, towing, anchoring loads or safety-critical service; these Sea-Dog cast shackles have no published load rating.
- Review the actual listing for included components and condition. Pickup or viewing in Kelowna is by appointment.
Find the same part number in our catalog
Match the exact number on the packaging or original records, then review the listing for its condition and components.
More marine hardware references
See our Sea-Dog hinge identification guide for another family of stainless marine fittings.
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