AMD 939 retention bracket screws

[WT]

I picked up a pair of AMD boards from a friend tonight and both of them were modded (by said friend) with aftermarket coolers, necessitating the need to remove the stock AMD retention bracket. I bought them without the HSFs, so my plan was to use each with its stock setup.

I have two stock AMD coolers to use with each, but I did not get the two screws needed to hold down the retention bracket to the plate underneath the board itself.

Does anyone know where to pick up a few or what size screws I am looking for ? Keep in mind I HAVE the retention bracket, I just need the screws (4 total) for each of the two boards.

retention bracket

 

[mindless1]

I checked a Biostar skt 939 board's bracket, can't be 100% sure all 939 brackets are the same but from what I recall it looks normal to me. It's screws are 6-32 thread, 1" long. Fortunately this thread pitch is the same as the most common screws in a computer case so you could just take a screw off the PSU rear mounting points or a hard drive, etc, and see if that threads smoothly into the bracket to confirm it is the right size. I doubt it would be a larger screw than this, but possibly the smaller 4-32 pitch instead as used on floppy drives, optical drives.

As for where to find them, it's a very common size if that's what you need. 4-32 slightly less common in 1" length but probably still common enough, you can get more than 4 for about $1 at any reasonably stocked hardware store. Next cheapest is probably someone on ebay, otherwise web store shipping will cost a lot more than the screws would.

 

[WT]

Thanks, mindless ! I actually had two screws in the box with the hardware accessories, and judging by their length, they are the aftermarket ones for the HSF. They are about 1/4" too long compared to the stock screws (I pulled one out of a stock 939 board I managed to scrounge up out of the parts box). The aftermarket HSF that he used was a Tt Blue Orb II, and its so huge that it covers BOTH the RAM sockets AND the AGP slot, so there is no way I could even use that even if I wanted to for the build.

I'll try the local hardware store with my stock screw for reference, and take along the backing plate to test the fit.

 

[mindless1]

My prior reply had an error, the smaller screws used with optical drives and floppies is 4-40, not 4-32.