5001 — Silkworm cocoons suitable for reeling
5002 — Raw silk (not thrown)
5003 — Silk waste (including cocoons unsuitable for reeling, yarn waste, and garnetted stock)
5004 — Silk yarn (other than yarn spun from silk waste) not put up for retail sale
5005 — Yarn spun from silk waste, not put up for retail sale
5006 — Silk yarn and yarn spun from silk waste, put up for retail sale; silkworm gut
5007 — Woven fabrics of silk or silk waste