Attitude about right for thread (6)
I believe the answer is:
strand
'thread' is the definition.
(strand of material)
'attitude about right for' is the wordplay.
'attitude' becomes 'stand' (stand is a kind of attitude).
'about' is an insertion indicator.
'right for' becomes 'r' (I can't justify this - if you can you should give a lot more credence to this answer).
'stand' going around 'r' is 'STRAND'.
Can you help me to learn more?
(Other definitions for strand that I've seen before include "Run aground, beach" , "Maroon - thread" , "Leave helpless - single thread" , "Yarn - thread" , "Drive aground on shore" .)