Crossword Puzzle Secure overhead, say

Clue: Secure overhead, say

Close securely (with "down") (BATTEN with 6 letters)
Bolt securer (NUT with 3 letters)
Overhead expanse (SKY with 3 letters)
Secures a sword (SHEATHES with 8 letters)
"I say!" sayer (BRIT with 4 letters)
Like a well-secured door (BARREDANDBOLTED with 15 letters)
Securely latched (SHUT with 4 letters)
Secure container, for storing keys next to a shared-use door, perhaps (LCKBX with 5 letters)
It may be secured with a pin (ASCOT with 5 letters)
Secure place for valuables (SAFE with 4 letters)