30-01-2015 13:15

Greg Needel

Re: pic: 80/20 Flanged Button Head Fasteners

Yup, flanged screws are great for retention on the ends of shaft. Also dropping a washer into the depths of your robot is never fun. We buy ours at Mcmaster.

http://www.mcmaster.com/#91355a080/=vozj62

30-01-2015 14:08

Rosiebotboss

Re: pic: 80/20 Flanged Button Head Fasteners

Totally missed these! What a headache saver....thanks, Greg.

30-01-2015 15:02

nathannfm

Re: pic: 80/20 Flanged Button Head Fasteners

Note that you can strip the hex out of a button head much easier than out of a socket head, especially when the screw is retained with Loctite as should be done on a spinning shaft like this. We had this problem numerous time on our drive last year and have since switched to socket heads with washers. If only socket heads with flanged didn't cost $4 PER SCREW.

30-01-2015 15:07

AdamHeard

Re: pic: 80/20 Flanged Button Head Fasteners

Quote:

Originally Posted by nathannfm Note that you can strip the hex out of a button head much easier than out of a socket head, especially when the screw is retained with Loctite as should be done on a spinning shaft like this. We had this problem numerous time on our drive last year and have since switched to socket heads with washers. If only socket heads with flanged didn't cost $4 PER SCREW.

30-01-2015 15:53

asid61

Re: pic: 80/20 Flanged Button Head Fasteners

Quote:

Originally Posted by nathannfm Note that you can strip the hex out of a button head much easier than out of a socket head, especially when the screw is retained with Loctite as should be done on a spinning shaft like this. We had this problem numerous time on our drive last year and have since switched to socket heads with washers. If only socket heads with flanged didn't cost $4 PER SCREW.

31-01-2015 07:47

Rosiebotboss

Re: pic: 80/20 Flanged Button Head Fasteners

Quote:

Originally Posted by AdamHeard Assuming you're using a reasonable size like #10-32 or larger, you're putting some mean torque into the bolts, using junk wrenches, or using junk bolts. We haven't had issues with buttonheads stripping out. #8-32 and smaller on the other hand, much easier to strip.

31-01-2015 12:24

nathannfm

Re: pic: 80/20 Flanged Button Head Fasteners

Quote:

Originally Posted by AdamHeard Assuming you're using a reasonable size like #10-32 or larger, you're putting some mean torque into the bolts, using junk wrenches, or using junk bolts. We haven't had issues with buttonheads stripping out. #8-32 and smaller on the other hand, much easier to strip.