[TR] Differences between a bolt - hexagon head and a setscrew - hexagon head

[Michael Marr]

The shank of a screw is threaded all the way to the head of the screw.  The shank of a bolt is only threaded part way - the balance of the bolt is unthreaded.

Michael Marr

Mobile:  630-202-0065

Sent from my iPad

On May 21, 2019, at 01:04, Sujit Roy <triumphstag at gmail.com<mailto:triumphstag at gmail.com>> wrote:

I can't figure out what the difference  is between  a bolt - hexagon head and a setscrew hexagon head as mentioned in the Standard Hardware Catalog.
Here's my theory.  A bolt  - hexagon head has an integrated washer built into the head. and the part no. starts with HB where as a setscrew - hexagon head does not have the integral washer. (HU)

My Stag parts book shows three fasteners holding on the water pump cover.

1 is a bolt (HU) no washer needed nor shown, the other two are setscrews (HU) 2 washers needed and are shown.



Can someone enlighten me?

Regards, Sujit

--
Sujit Roy
Cupertino, California

https://triumphstagblog.wordpress.com/

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