_x000D_ With open end and small flange, this flat head rivet nut performs a good performance of fastening. The rivet nut often has a built-in feature, such as a slot, to aid in tightening the fastener. It is normally chosen because of its low profile compared to other nuts. And this blind rivet nut is the piece that goes between the individual nutsert and the nose of the installation tool. _x000D_ _x000D_ _x000D_ Features: _x000D_ 1. Crafted from 304 stainless steel providing strength, it has a sturdy body with no rusting properties._x000D_ 2. With open end, small flange, round hole, threaded inner wall and partial anti-skid surface, this flat head rivet nut has a good performance of fastener function._x000D_ 3. There are various sizes, M3, M4, M5, M6, M8, for choices, and it is normally chosen because of its low profile compared to other nuts. _x000D_ 4. The rivet screw often has a built-in feature, such as a slot, to aid in tightening the fastener._x000D_ 5. The adapter is the piece that goes between the individual nutsert and the nose of the installation tool. It is not the tool. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Material: 304 stainless steel _x000D_ Color: Silver _x000D_ Size: M3, M4, M5, M6, M8(optional) _x000D_ Type: Flat Head Rivet Nuts _x000D_ Item Quantity: 20pcs _x000D_ Package Weight: 20-120g _x000D_ _x000D_ _x000D_ Package Included: _x000D_ 20 x Blind Rivet Nuts