This quality-focused Standard establishes in-process and final inspection requirements for fastener products as well as a receiving inspection plan for fastener pur-chasers. This Standard identifies four categories, recog-nizing that fastener users have widely varying requirements. The fourcategories covered are as follows:
(a) Category 1 — a receiving inspection plan for purchasers
(b) Categories 2 and 3 — utilizes documented and verifiable in-process controls structured at the produc-er’s discretion
(c) Category 4 — includes all of the requirements of Category 2 plus 100% inspection for a specific feature or features
