Why did my brain quit working to solve the most basic of things?

[sab]

Except for the whole tap bolt thing.

Well, I just found out about that, so now I’m all screwed up. Or is it all bolted up?

 

[DrDmoney]

From an Ironworkers perspective, it’s better to be in the bolt-up gang than the screw-up gang.

 

[mrblaine]

Well, I just found out about that, so now I’m all screwed up. Or is it all bolted up?

Wait until you find out how they figure out how much thread to put on a partially threaded fastener.

 

[DrDmoney]

Wait until you find out how they figure out how much thread to put on a partially threaded fastener.

2x diameter +1/4” under 6” and 2x diameter +1/2” over 6”

 

[mrblaine]

2x diameter +1/4” under 6” and 2x diameter +1/2” over 6”

Something I can never seem to remember.

 

[sab]

I know there’s a formula, but there’s no reason to memorize it, since the threaded length is usually easy to look up. Before the Internet, the McMaster-Carr catalog and Machinery’s Handbook were my go-tos.

 

[mrblaine]

I know there’s a formula, but there’s no reason to memorize it, since the threaded length is usually easy to look up. Before the Internet, the McMaster-Carr catalog and Machinery’s Handbook were my go-tos.

McMaster used to list the unthreaded portion, now on the grade 8 stuff, they just list 2" minimum thread which is about useless.

 

[astjp2]

They are a reduced drive flange head. The washer is just slightly larger than the flange diameter so it is a perfect washer for what I am using it for. If I can't find the same then I may have to switch but I'd rather just get more of the same since they are made, they do have them, I just can't find them.

An960-6 is a mil spec washer used with 3/8 bolts, if you need the countersunk for a radius, try https://www.gen-aircraft-hardware.com/images/pdf/nas1587.pdf

 

[astjp2]

Blaine - what type of stainless is stronger than grade 8?

416/421 in some hardnesses have a better tensile strength