Fat Spring Bars (pair)
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Find Your Strap Size Here
Finding the perfect strap or accessory for your watch can greatly enhance comfort and style. Our sizing guides help you measure your watch accurately, ensuring the best fit. Whether you have a traditional watch or an Apple Watch, we provide step-by-step instructions to determine the ideal strap size and watch lug width. With these guides, you can confidently choose the perfect straps and accessories to enhance your watch.
• Traditional Watch Instructions:
1) Open Our Sizing Guide Here. Download Here
2) Print File. In print options dialogue box, uncheck any “shrink oversized pages to fit” or “fit to page” boxes. *IMPORTANT!*
3) After printing, test the accuracy by measuring the “one inch” test strip with a standard ruler.
4) Cut off the inch ruler from the side and wrap around your wrist to determine your wrist size.
5) Hold your watch with the lugs framing the blocks below to determine your lug width. There should be no gap or overlap.
Lug Width Measurement:
To determine your lug width, print the BluShark Watch Sizing Guide in step-1 and place your watch on the measuring blocks located on the bottom of the guide.
• Apple Watch Instructions
1) Open Our Apple Watch Sizing Guide Here. Download Here
2) Print File. In print options dialogue box, uncheck any “shrink oversized pages to fit” or “fit to page” boxes. *IMPORTANT!*
3) Cut out the tool. Position the wider end where you would wear a watch. For a more accurate measurement, you can use a piece of tape to hold the wider end in place.
4) Wrap the tool around your wrist, keeping it in place. Make sure the tool feels snug and doesn’t slide up or down.
5) Note the inch number the arrows point to – that’s your band size.
6) If the arrows land between two measurements, choose the smaller of the two numbers closest to the line.
Adapter Measurement:
To determine which size adapter you need, use the following guide:
If your Apple Watch is 42mm, 44mm, or 45mm, you’ll need an adapter that measures 22mm.
If your Apple Watch is 38mm or 40mm, you’ll need an adapter that measures 20mm.
If you have a 41mm Apple Watch, choose the 20mm adapter.
- In stock, ready to ship
Fat Spring Bars
Built for the heavyweights. If you’re rocking a serious dive watch that demands robust hardware, our stainless steel Fat Spring Bars are up to the task. Modeled heavily after the legendary "Seiko Fat" spring bars, these are thick, incredibly durable, and engineered to provide maximum security for your heavy-duty timepieces.
Sold as a pair, these feature a small flange on the shoulder to give your tool a point of contact, but they do require specific watch case features for a proper fit.
Specifications
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The Body (2.4mm): An extra-thick barrel designed for heavy-duty rubber dive straps and specialized heavy-canvas bands.
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The Tip (0.9mm): Oversized pins built to lock securely into watches designed with larger lug holes.
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Material: High-quality, heavy-duty stainless steel.
Fit & Compatibility
These spring bars are specifically designed for watches with drilled lugs (where the holes go all the way through the outside of the case) and larger lug holes. Because the flange is very small and the tips are oversized, installing them on a standard watch case without drilled lugs can make them extremely difficult to remove.
Looking for different options?
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Need to fit a standard strap on your dive watch? A 2.4mm thick spring bar will not fit through most standard leather or nylon straps. If you have a dive watch with oversized lugs but want to use standard straps, or just want tool-free swapping, check out our Skinny Fat Quick-Release Spring Bars.
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Just need regular hardware? If you are outfitting a standard everyday watch, field watch, or dress piece, these fat bars will not fit your lug holes. Head over to our Standard Spring Bars instead.
Available in 20mm and 22mm.
