Quicker over next half and securer (8)

I believe the answer is:

fastener

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'and securer' is the definition.
I can't judge whether this definition defines the answer.

'quicker over next half' is the wordplay.
'quicker' becomes 'faster' (synonyms).
'over' indicates putting letters inside.
'half' means to take half the letters.
'next' with half the letters taken is 'ne'.
'faster' enclosing 'ne' is 'FASTENER'.

Can you help me to learn more?

(Other definitions for fastener that I've seen before include "It could secure" , "Eg, clip or catch" , "Stud perhaps" , "See 23" , "Zip, clasp, eyelet ..." .)

I've seen this clue in the Sydney Morning Herald.

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