Hex - Male Female

Male - Female Standoffs are used when 1 of the 2 mating components are internally threaded.

-Aluminum is popular for its lightweight / strength compromise. It is non-magnetic, performs well in severe temperatures, and has insulating properties.

-Brass is used in making high-quality standoffs. It is conductive, resists corrosion, and is non-magnetic. It is costlier and heavier than aluminum and is usually plated zinc or nickle.