Hex Standoff - Male-Female #8-32 x 5/16 (OD) x 1 (Length) Stainless Steel (18-8), Plain Finish (QUANTITY: 100)

Compare to: RAF: 4583-832-SS-0 and LYN-TRON: SS6994-1.000-00
An opening with a partial internal thread at one end an externally threaded post at the opposite end
It is used to hold two components at a given distance from each other.
Standoffs are usually chosen over spacers when longer sizes are required
Hex standoffs can be installed with a nutsetter or other wrenching device