ㆍ재질 (Material) : S45C
  ㆍ공차(Tolerance) : 0 ~ 0.03
  ㆍ도금두께 (Coating thickness) : 0.02 ~ 0.03
  ㆍ주문사양(Specifications for order) : 고주파열처리, 경질크롬도금, 조질열처리, 나사가공 外 * 외경 40 이상은 제한없음 *
    (high-frequency quenching, hard chromium coating, quenching-tempering heat treatment, screw processing, etc. * No limit on external diameter 40 and above *