Metric Threading Taps M12 x 1.5mm Pitch Thread Plug Tap HSS Ti-coated Round Heating Wires These fasteners are made from

These fasteners are made from highly corrosion resistant 304 stainless steel making them both tamper and weather resistant

(You may need drill press if the shelf is DIY)

hex nut driver

For the simple design structure

Metric Threading Taps M12 x 1.5mm Pitch Thread Plug Tap HSS Ti-coated Round Heating Wires These fasteners are made fromSpecifications: Thread Size: M12 x 1. 5 Accuracy: H2 Shank Width: 7mm 0. 28 inch Thread Length: 30. 8mm 1. 21 inch Total Length: 88. 4mm 3. 48 inch Material: HSS (High Speed Steel) Finish: Titanium Coated Package Contents: 1 x Metric Machine Tap Descriptions: 1. Straight flute tap, clear threads without burrs, right hand tapping direction. Provides rapid downward chip removal to achieve efficient thread cutting, suitable for processing through holes