Today I acquired...........

[Kram]

Manually is not ideal for machine taps but yes it will work.

 

[Memmeddu]

Manually is not ideal for machine taps but yes it will work.

This confirmed my thoughts.

 

[Bki26]

Send it to Hownot2 he'll test it to destruction, it won't provide you with any official certification but might be a bit of publicity depending how well it does.

Yea few others suggested that and I might, know someone who works at Strathclyde uni in Glasgow which has a very professional advanced materials lab that might be able to help more than my plan of simulating a fall factor 1 fall from a tree tomorrow

 

[Kram]

Yea few others suggested that and I might, know someone who works at Strathclyde uni in Glasgow which has a very professional advanced materials lab that might be able to help more than my plan of simulating a fall factor 1 fall from a tree tomorrow

Use a top rope backup and video it
Trees are very bendy, so while its a good initial test the force will be lower than a bolt in rock.

This confirmed my thoughts.

I use machine taps for nearly everything, by hand, lathe or cordless drill. Most good machine taps are HSSE/cobalt but very few hand taps are.
Form taps give a better thread, I would like to get form taps for M4,M5 and M6.

I need a spark plug adaptor so I have ordered one of these, slight use OSG taps.

M14 OSG Machine Tap 14mm x 1.25mm 3 Flutes TiCN Coated Offer | eBay

X1 OSG M14 Machine Tap. TiCN Coated.

www.ebay.co.uk

It appears they have 5 or so listings, and have sold a thousand + of these taps, all with good feedback. I can only assume a car manufacturer must be getting a new one out for every engine?
What else is m14 1.25, used for?