nylon insert locking nut din985 Standard Model:DIN ANSI; ASTM Product size:M3-M100 1/4"-4" HIgh quality and good delivery 1. Standard: DIN985 and DIN9822. Thread: coarse, fine or extra fine (e.g. M10-1.5, M10-1.25, M10-1.0)3. Surface: full hexagon, no burr and nice flatness4. Class4,6,8,10;Gr2,5;A194 2H5. Test standard: ISO898-2;DIN267-4;ASTM etc6. Material: low carbon steel(c1008),medium carbon ...