1. Diameter : Inch 1/2" to 4" , Metric M12 to M100
2.Finish: Plain (Self Color) / Black Oxide / Zinc Plated
HDG / Zinc Nickel / Cadmium Plating / PTFE
3. Raw material : 1045 / 4140
4.Standard: ASTM A194 2H / 2HM / 4 / 7 / 7L / 7M / 7ML
SAE J995 GR.2 / GR.5 / GR.8
ISO 898-2 GR.4 / GR.6 / GR.8 / GR.10