fastener
/ˈfɑːsnə(r) ˈफ़ास्न(र्)/ ( also fastening ) /ˈfɑːsnɪŋ ˈफ़ास्निङ्/ noun [C] something that fastens things together वस्तुओं को बाँधने या कसने वाली वस्तु