Hot Rods HOW DO YOU SAFETY WIRE BUTTON HEAD BOLTS?

Anything under NAS1351 and 1352 has feature H, safety wiring holes. These are the big brother of the MS16995 and MS16996 CRES 303 (18-8) alloy with no safety wire holes.

Getting scary when I can rattle these specs off the top of my head early in the morning....

 

If one has to drill a bolt for safety wire because one is not available commercialy , it might not be the right bolt for the job

 

Thanks for the video link. I knew most of that, but for me it was a good refresher & I learned a few new things.

 

Can't say I've wired anything lately,But I've got 2 rolls of wire just in case.
Thanks for the video, brought back thoughts of my USAF days and years at Pratt and Whitney A/C.

 

Recall ****on head screws were designed for non tripping purposes when holding down something like diamond plate flooring. Should not be used for strength purposes.

 

Just to clear things up: The ****on head bolts were pre drilled and came with the Wilwood brakes. Thanks to those who sent videos but I haven't seen any for ****on head bolts. I've wired the hex heads and ****on heads up but other than preventing back out I don't see anyway to get torquing tension on a ****on head due to the round top.

 

If there is room for a hex head bolt, then just replace them. I looked at the brakes on my 55, it has hex head bolts with safety wire.

Please excuse the spelling. I posted this with my phone.

 

I have a roll of monel safety wire that came out of Grumman 30 years ago... have used it for everything but doing safety wiring. And the size of the roll hasn't changed although I've used it quite a bit.

 

I believe that is the purpose of safety wire, to prevent backing out. Lippy

 

If look at the picture I referrenced, you will see how to safety wire ****on head bolts. The single strand method in a circular pattern will prevent the bolts from backing out. Safety wire does not provide additional torque to the bolts, it will only prevent back out, provided it is safetied coreectly.

Sent from my SM-T350 using The H.A.M.B. mobile app

 

Me too, I hate the damn things. I can't count how many of the damn things I've had to drill out because the stupid small hex or Torx head stripped out. I toss'em and put in regular hex bolts.

 

Proper safety wiring helps but.......... Bolts and studs can stretch and threads can pull in heavy duty applications resulting in parts loosening with the safety wiring intact, I've seen it happen. The only place I ever found final answers was in theory, vigilance seemed to work better in practice.

Ed

 

Yes, it takes a bit of hand holding...as it were, but yes it can be done.
SHARP bit(s), a center punched, initial location, then after the initial location is started, you change the direction of the drill bit.

Just go slow, it can be done.

Mike