FIELD: fasteners.
SUBSTANCE: invention relates to a spacer anchor containing an anchor bolt, an expander sleeve surrounding the anchor bolt, and an expander case located in a front area of the anchor bolt, wherein the expander case has a narrowing zone for expansion of the expander sleeve, while the expander case is provided with at least one recess of the expander case. in accordance with the invention, at least one recess of the expander case is limited with a support wall of the expander sleeve, and at least one recess of the expander case has a non-axial-symmetric cross-section.
EFFECT: improvement of operational characteristics of a spacer anchor.
17 cl, 12 dwg
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