Feature

●● 軽金属, wood, cast iron, etc. Soft material to insert and screw for fastening the enlightened.
●● Sharp screw reinforcement, prevent the damage or for fastening enhance your thread.
●● Bolt Thread: M4 x 0 x 0.70 bottom hole diameter (mm): 4.2 ● Weight (g): 20 
●● Stainless steel (sus304)
●Country of Origin: Japan


Description

軽金属·プラスチックなど柔らかい材質に挿入することで、ねじ止め時の締結力を増します。
めねじの補強·損傷防止や締結品質の向上に。