Knitting parts of knitting machine

PCT No. PCT/JP94/00566 Sec. 371 Date Nov. 30, 1994 Sec. 102(e) Date Nov. 30, 1994 PCT Filed Apr. 5, 1994 PCT Pub. No. WO94/23105 PCT Pub. Date Oct. 13, 1994In knitting parts (a guide, needle, tongue, sinker, separator, jacquard guide needle and the like) of a knitting machine, a covering of a hard carbon film 15 of a preset film thickness d on a surface of a portion of a parts base material 10 frequently contacting with knitting yarn and, at the same time, a film thickness changing area 16 where the film thickness of the hard carbon film decreases gradually is formed from an area where the covering of the hard carbon film 15 of the preset film thickness d is formed to an area where such a covering is not formed. A ratio (L/d) between length L of the film thickness changing area 16 toward a film changing direction and the preset film thickness d of the hard carbon film 15 is controlled to be at least 5:1.