I did a write-up as part of this post of why it’s so important to use the correct size countersinking pilot. To be consistent when countersinking, I use a Microstop Countersink drill guide and a 120 degree countersink pilot cutter. /rebates/2fb2fTools-Power-Tool-Accessories-Drill-Bits-Twist-Drill-Bits2f3-16-in2fN-5yc1vZc250Z1z1ddh2&. Some of the parts, such as the fiberglass tips or thicker metal pieces (from the EAA Sheet metal course I took, I learned the rule of thumb is metal ticker than 0.04 inches) need to be countersunk. Since the project is using Pulled Rivets, the angle of the countersunk pulled rivets is 120 degrees, as opposed to solid aviation rivets, which use 100 degrees.įor that purpose, the factory has specific dimple dies for the thinner parts that are dimpled for flush riveting. Countersinking & Dimpling for flush riveting The factory has already drilled most of the holes, except for a few that need match drilling like the fiberglass tips.įor some minor alignment issues, I’m using some chucking reamer bits to correct the hole. Zinc plated knurled steel rivet nut Thread Pitch: 3/8-16 Outside Diameter: 12.9mm Drill Hole Size: 13mm / 17/32 Length: 22mm Sheet Metal Grip Range: 26. I’ve also made myself a handy little reference block out of wood so I can quickly check sizing while I’m in the garage. RIVNUT® The Original blind installed internally threaded rivet, was invented (patent 2,149,199) in 1936 for the purpose of attaching a rubber aircraft wing de-icer extrusion to the leading edge of the wing. The kit has a lot of different measurements, so I’ve compiled some information for drilling, countersinking and rivet sizing. SM10-3/16 Trapezoid Rivet Set used for Bucking the 3/16 Head Rivets that are typically used on the Utility Brand Trailers as well as any other line of.
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