Material: High quality alloy steel 40Cr,High quality carbon steel C45,

              stainless steel and others.
Hardness:surface hardness HRC55-60 by inductive hardening, 3-5mm depth;

              Core hardness HRC38-45 by hardening and tempering
Precision Grinding + antirusty oil
Bronze, brass, bi-metal bushing or metal-Rubber silent block avaible

Standard packing:1000pcs spring pin in a polybag
Other packing:PVC box,plastic tub,iron box

 threaded dowel pin

taper dowel pin