Flat head screw on radiator cap

[lotus]

I also found out the hard way you had to remove that screw before removing the cap cover. Not knowing any better, I forced the cover off
by bending the tab that the screw goes through. Of course, didn't know the tab was there until after I got the cover off. Went to Ace Hardware
picked up a replacement screw. Weird design Argh
I know better now.....
Larry

 

[Eric Ray]

I also found out the hard way you had to remove that screw before removing the cap cover. Not knowing any better, I forced the cover off
by bending the tab that the screw goes through. Of course, didn't know the tab was there until after I got the cover off. Went to Ace Hardware
picked up a replacement screw. Weird design Argh
I know better now.....
Larry

I bought my Rocket used (someone else bent it), so I didn't know why I couldn't unscrew the cap.

 

[IFIXSHlT]

I don’t own a second GEN rocket, however, I have gotten stripped Phillips head screws out by gently tapping in a torque bit that’s just oversized, and wrenching it out. If the set screw and the material that it’s screwed into our two dissimilar metals, the threads may be galled up, in that case, you may have to drill the head out with proper size bit, then switch to smaller bit to drill the remaining thread shaft all the way out. This method should prevent damage to the cap if done correctly.

 

[triplespeed]

Does anyone know the Triumph part number for this screw? Or even the entire Radiator Cap Cover? I could not find part numbers through my web searches. I ended up buying an M2.5 x 20mm Phillips Flat Head screw at the local hardware store. It fits, but seems like a slightly loose fit. I put blue thread locker on it to keep it in place until I find the correct screw size.

 

[A1A Rider]

I bought a new bike and wanted to take the bolt out to see WTF is this. Well, it was so tight, I striped it. Had to order a new bolt slightly larger, as I had to force it out. Put in a phillips one.

Disappointed with Triumph, this is a wack solution to hold a cap for such an expensive bike.

 

[sandcritter]

My screw was buggered/bent upon receipt. The soft metal (was it phillips? I forget) stripped out next, trying to remove it. Using a needle-nose, turned the mangled screw out. Took cap to a machine shop, retapped hole to one size larger (think was 6-40 or some such), into which put a stainless button head with allen drive. Looks factory, still not the best design BUT has a better quality, straight interference screw now.

 

[Einar]

Mine was also mangled trying to remove it. Horrible design. They're M3 x 20mm. These are a direct, superior replacement:

https://www.amazon.com/dp/B01HBN0X64?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

I also applied lubricant to the threads of the new ones, to aid in future removal.

 

[triplespeed]

Mine was also mangled trying to remove it. Horrible design. They're M3 x 20mm. These are a direct, superior replacement:

https://www.amazon.com/dp/B01HBN0X64?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

I also applied lubricant to the threads of the new ones, to aid in future removal.

Do you know the thread pitch for these M3 x 20 screws?

The M2.5 x 20 screw I recently purchased and installed had 0.45 thread pitch. This one screwed-in nicely but a little loose. The M3 x 20 screw with 0.50 thread pitch was a very tight fit when I test-fit at the hardware store and decided to go with the M2.5 x 20 screw with 0.45 thread pitch instead.

In the meantime a local Triumph dealer identified the screw as P/N T3200096 so I bought two and will install one upon receipt. If I can determine the thread pitch for the Triumph screw I will post here.

 

[Einar]

Do you know the thread pitch for these M3 x 20 screws?

The M2.5 x 20 screw I recently purchased and installed had 0.45 thread pitch. This one screwed-in nicely but a little loose. The M3 x 20 screw with 0.50 thread pitch was a very tight fit when I test-fit at the hardware store and decided to go with the M2.5 x 20 screw with 0.45 thread pitch instead.

In the meantime a local Triumph dealer identified the screw as P/N T3200096 so I bought two and will install one upon receipt. If I can determine the thread pitch for the Triumph screw I will post here.

M3 x 20mm
Bright zinc plated, counter sunk bolt
Head Diameter: 6mm
Head Height: 1.7mm
Thread Pitch: 0.5mm

 

[G-Force Junkie]

How about 5 minute epoxy a bit into the hole? Is an impact screwdriver out of the question? Brace the back of the cap and whack lightly a few times? Think, what would MacGyver do?