nˈoʊn æz dᵻɹˈɛkt fˈæsənɪŋ ɔːɹ ɛksplˈoʊsɪv fˈæsənɪŋ, ðɪs tɛknˈɑːlədʒi ɪz pˈaʊɚd baɪ ɐ kəntɹˈoʊld ɛksplˈoʊʒən əvə smˈɔːl kˈɛmɪkəl pɹəpˈɛlənt tʃˈɑːɹdʒ, sˈɪmɪlɚ tə ðə pɹˈɑːsɛs ðæt dɪstʃˈɑːɹdʒᵻz ɐ fˈaɪɚɹɑːɹm.
Known as direct fastening or explosive fastening, this technology is powered by a controlled explosion of a small chemical propellant charge, similar to the process that discharges a firearm.