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Screw size


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I've ingeniously stripped the head of one of the two little screws holding in the plate at the butt end of the gearbox on my G&G F2000. I've got screw extractors on the way from eBay, but it'll need replacing obviously, and I'm not a screw expert (depending on who you ask).

 

It's (its twin is) a 1cm long screw that's about 2mm in diameter to the outside edge of the threads. Not pointy or steeply-threaded like a wood screw, obviously. What do I ask for or search the Internoffle for to find a replacement? Any advice on how to source a more robust one would also be nice.

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Try a thread pitch app. No idea how good they are, but I've seen them :)

 

Also, look for said screw from a fixing/fastening supplier as opposed to a bag of 1 billion for 3 pence off ebay. It's more likely to last. But then may also strip the crappy zinc gearbox...

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If the diameter of the threaded portion is 2mm or just shy of that then it's likely to be a regular M2x10 machine screw.

 

Assuming it's a countersunk head then something like this might be what you're after,

 

http://www.gwr-fasteners.co.uk/m2-socket-countersunk-screws---high-tensile-109-12232-p.asp

 

Go with high tensile whenever you can (imo) or A2/A4 stainless if corrosion is a concern, try to avoid BZP which many cheap(er) screws are.

 

EDIT : Also a tip to avoid wrecking hex head screws in the future is get a set of Wera Hex-Plus hex keys, the profile is a cross between a hex and torx and grips rubbish (and good) screws far better than regular hex keys reducing slipping and thus reducing the use of profanities.

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I will second any tool by wera.

 

I have 2 sets of their screwdrivers which have been quite happy being hammered to *fruitcage* for the last 20 years. The only way they go wrong is when someone pinches them...

 

I also have hexdriver and diamond bit set. See above for reference :)

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