An adhesive bonded attachment assembly is provided for supporting and retaining an insulation blanket on a substrate such as aircraft engine nacelle or the like. The attachment assembly includes a stud attachment having a base for adhesive bonded affixation to the nacelle substrate and a fastener element such as a threaded stud extending from the base at least partially into a grommet-lined mounting port formed in the insulation blanket. A radially enlarged, insulated cap fastener is secured to the fastener element to retain the insulation blanket on the nacelle substrate in a manner shielding surrounding structures and components from heat generated during engine operation. The insulated cap fastener projects radially beyond the associated grommet for improved heat-shielding of the adhesive bonded stud attachment, thereby safeguarding against debonding of the attachment base in response to high temperature exposure.