... quality, competitive prices 3) Stainless steel, carbon steel. 1) Description:channel spring nuts , spring channel nuts , channel nuts , strut nuts .Spring type ... material:a) normal strength: made from low carbon steel, C1015, Q235 etcb) high strength: made from high ... C1045, etc, And with hardened treatment.-material: carbon steel, stainless steel, SS304, SS316. etc.-3) Surface treatment:plain/self ...