Stainless Steel Standoffs

Stainless is the structural option. Where brass is chosen for conductivity and nylon for isolation, stainless steel 304 is chosen because the standoff has to carry load, survive a corrosive environment, or hold thread through many assembly cycles without wearing.

When it earns its cost

Stainless is several times stronger than brass in both tension and thread shear, so it takes a heavy board, a fan assembly or a panel without deforming. It resists atmospheric and indoor corrosion far better than plated brass, whose nickel layer eventually wears through at the hex flats. And it will not creep at temperature the way nylon does.

Against that: it conducts, like brass, so it is not an isolator. It costs more. And stainless against stainless galls — run the screw in slowly and do not drive it with an impact tool.

Male-female and female-female

Male-female carries a threaded stud at one end and a tapped hole at the other. Female-female is tapped both ends. For a load-bearing stack, male-female into the chassis gives the stiffest base.

Sizing

Length is the body length across the hex, with the stud stated separately. Every listing gives body length, across-flats, thread and stud length in millimetres and inches.