01972 Socket head cap screw M4x12

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Part Number: 1972

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01972 Socket head cap screw M4x12

Use for LOGO 400 / LOGO 400 SE / LOGO 500 SE (2009-2012) / LOGO 480 XXTREME

Specifications:

Socket head cap screw (4x12mm) x 4
Washers x 4

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Average Customer Ratings

3.0

Do not overtighten!

I'm not sure what the torque rating of these screws is, but you can over-tighten them, which may lead to disaster. I had the head on my 550 SX explode in mid flight when one of these snapped off inside the spindle shaft. (I found the spindle shaft with the broken-off screw in there, so it wasn't because the screw backed out). I was running the stock pinion, so overspeed is not the issue. I had tightened them hand-tight, but pretty tight, as I kept having them back out on me every 10 or 20 flights, yes even with loctite (blue). Make sure you get a good loctite bond and don't succumb to the temptation to torque them down to get them to stay. If I find a higher torque replacement, I'll update the review...

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Reviewed by: John Etgen from Texas and Colorado on 3/9/2015