Radiation shield standoff

An electronics assembly, comprising:

• at least one chassis wall having an inner surface;
• a radiation shield layer over the inner surface of the chassis wall;
• at least one standoff coupled to the chassis wall, the standoff comprising:
• a support section having a mounting surface;
• a coupling section that couples the standoff to the chassis wall;
• a flange located between the support section and the coupling section, the flange configured to hold the radiation shield layer against the inner surface of the chassis wall;
• and
• a boss located between the flange and the coupling section, the boss abutted against the flange and smaller than the flange;
• an electronic component attached to the mounting surface of the standoff and separated from the inner surface of the chassis wall by the support section of the standoff;
• wherein the boss is sized to reside within an opening in the radiation shield layer and has substantially the same height as the radiation shield layer, and the flange is sized to obscure a gap between the boss and the radiation shield layer, thereby preserving a 4-pi radiation coverage of the radiation shield layer.