Description
Imtra SPA-803 Stainless Steel Chain Swivel – Large
Premium 18-8 Stainless Steel Anchor Swivel for Smooth & Secure Anchoring
The Imtra SPA-803 Stainless Steel Chain Swivel is designed to enhance anchor alignment and ensure smooth operation through bow rollers and chocks. Crafted from rugged 18-8 stainless steel and polished to a high-quality mirror finish, this swivel is engineered for strength, durability, and corrosion resistance.
Its streamlined design minimizes snagging, ensuring free-running motion through bow rollers, while its robust construction and high working load make it an ideal choice for heavy-duty anchoring applications.
Key Features & Benefits
✔ Rugged Stainless Steel Construction – Made from 18-8 stainless steel for superior strength and corrosion resistance.
✔ Polished Mirror Finish – Enhances durability and adds a sleek, high-end look to your anchoring system.
✔ Streamlined Design – Ensures smooth free-running motion through bow rollers and chocks.
✔ Secure Anchor Alignment – Reduces chain twist and aligns the anchor shaft properly into the bow roller.
✔ Heavy-Duty Load Capacity – Designed to handle high working loads, making it suitable for larger boats and demanding anchoring conditions.
✔ Easy Installation – Simple assembly and secure attachment to both the chain and anchor using a Phillips head keeper screw and Allen key system.
✔ Tested & Engineered for Strength – Designed with high safety standards, ensuring reliable performance in all conditions.
Technical Specifications
Specification | Details |
---|---|
Manufacturer Part No. | 803 |
Product Type | Stainless Steel Chain Swivel (Large) |
Material | 18-8 Stainless Steel |
For Chain Size | 1/2" (12mm) |
Working Load | 5,880 lbs (2,673 kg) |
Breaking Load | 17,650 lbs (8,022 kg) |
Weight | 2.1 lbs (0.95 kg) |
Total Length (a) | 128 mm (5.04") |
Jaw Width (b) | 50 mm (1.97") |
Pin Diameter (e) | 15 mm (0.59") |
Assembly & Installation Instructions
- Remove the Phillips head keeper screws before unthreading the pins (e & f).
- Unthread each pin to open the swivel.
- Attach the chain by placing its link into the narrow end jaws of the swivel.
- Apply a bead of Blue "Removable" Loctite to the threads of the cross pin.
- Insert the pin through the chain link and firmly hand-tighten with an Allen key (5mm for SPA-803 model).
- Secure the keeper screw by applying Loctite to its threads and tightening it.
- Repeat the same procedure for securing the anchor side of the swivel.
- Allow 24 hours for Loctite to cure before use.
Available Imtra Stainless Steel Chain Swivel Models
Model | For Chain Size | Working Load | Breaking Load | Total Length (a) |
---|---|---|---|---|
SPA-801 | 6-8mm (1/4"-5/16") | 1,550 lbs (705 kg) | 4,650 lbs (2,114 kg) | 92 mm (3.62") |
SPA-802 | 8-10mm (5/16"-3/8"-7/16") | 4,500 lbs (2,045 kg) | 13,500 lbs (6,136 kg) | 118 mm (4.64") |
SPA-803 | 12mm (1/2") | 5,880 lbs (2,673 kg) | 17,650 lbs (8,022 kg) | 128 mm (5.04") |
Why Choose the Imtra SPA-803 Stainless Steel Chain Swivel?
The Imtra SPA-803 is a top-tier, heavy-duty anchor swivel, designed for seamless anchoring and enhanced chain alignment. Built for strength, durability, and corrosion resistance, this swivel provides smooth passage through bow rollers and chocks, ensuring a secure and reliable anchoring experience.
Upgrade your anchoring system today with the Imtra SPA-803 Stainless Steel Chain Swivel for unparalleled strength and performance!

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