Extra fin screw & plate, Bahne box and Fins Unlimited box

$4.99

Buy an extra fin screw and plate to keep around in case you drop one into the sand or lose it in your garage or car’s trunk.  Stuff happens! Note: number 6 screw.

Specs:

  • Phillips head, stainless screw, 6-32 x 3/4″
  • Stainless threaded plate, 1/2″ x 5/8″
  • Fits standard US fins fin boxes.

Description

Buy an extra fin screw and plate to keep around in case you drop one into the sand or lose it in your garage or car’s trunk. Stuff happens!

Note:  One fin screw and plate is included in every WG2 order–but you might want an extra to prevent down time if you lose the original.

Specs:

Screw: Phillips head, stainless steel, 6-32 x 3/4″

Threaded plate: Stainless steel, 1/2″ x 5/8″

Fits standard US fins fin boxes.

Note about screw size:

The screw we use is smaller than usual—a number 6 screw—but still plenty strong—more than 2,000 pounds of break strength. We went to a smaller screw in order to make a smaller hole in the fin, and thus a stronger fin. Loads concentrate at the hole, as shown by the yellow spots in the finite element analysis (FEA) shown below. Adding more fin mass, i.e. making the hole and the screw smaller makes the fin stronger. Our screw will fit into bigger holes—most companies use a bigger number-8 screw in a bigger hole. So if you need and extra for FSI’s WG2 or other fins, this will work.

FEA on fin hole during Wavegrinder Classic's development

FEA on fin hole during Wavegrinder Classic’s development

FEA on fin hole during Wavegrinder Classic's development

FEA on fin hole during Wavegrinder Classic’s development

Save

Save

Additional information

Weight 3 oz
Dimensions .75 × .75 × .3 in

Reviews

There are no reviews yet.

Be the first to review “Extra fin screw & plate, Bahne box and Fins Unlimited box”