{"product_id":"accud-american-standard-thread-ring-gauge-538","title":"ACCUD American Standard Thread Ring Gauge – Series 538","description":"\u003ch3\u003eACCUD American Standard Thread Ring Gauge – Series 538\u003c\/h3\u003e\n\u003cp\u003eGenuine ACCUD american standard thread ring gauge, available in 74 versions. Choose your size or model above; every version is listed with its ACCUD code in the table below.\u003c\/p\u003e\n\u003ch4\u003eModels and codes\u003c\/h4\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eACCUD code\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-00212-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e2-12UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-00440-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e4-40UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-00632-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e6-32UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-00632-UNC3\u003c\/td\u003e\n\u003ctd\u003eNO GO, 3A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e6-32UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-00832-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e8-32UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01012-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1-12UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01024-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e10-24UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01032-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e10-32UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01080-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1-8UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01126-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.1\/2-6UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01128-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.1\/2-8UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01147-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.4\u003c\/td\u003e\n\u003ctd\u003e1.1\/4-7UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01148-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.1\/4-8UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-0114-UNS\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1-14UNS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01188-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.1\/8-8UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01213-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1\/2-13 UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01220-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1\/2-20UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01220-UNFLH\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2, Left thread\u003c\/td\u003e\n\u003ctd\u003e1\/2-20UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01228-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e12-28UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01348-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.3\/4-8UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01420-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1\/4-20UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01428-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1\/4-28UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01428-UNF3\u003c\/td\u003e\n\u003ctd\u003eNO GO, 3A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1\/4-28UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01432-UNEF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1\/4-32UNEF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01436-UNS\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1\/4-36UNS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-01788-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.7\/8-8UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-0208-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e2-8UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-03410-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e3\/4-10UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-03416-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e3\/4-16UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-03816-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e3\/8-16UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-03816-UNCLH\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2, Left thread\u003c\/td\u003e\n\u003ctd\u003e3\/8-16UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-03824-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e3\/8-24UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-04048-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e4-48UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-05811-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e5\/8-11UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-05818-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e5\/8-18UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-05818-UNFLH\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2, Left thread\u003c\/td\u003e\n\u003ctd\u003e5\/8-18UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-06040-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e6-40UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-07809-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e7\/8-9 UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-07814-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e7\/8-14UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-08036-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e8-36UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-1111612-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.11\/16-12UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-111612-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.1\/16-12UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-111616-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e11\/16-16UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-11212-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.1\/2- 12UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-11216-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.1\/2-16UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-11412-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.1\/4- 12UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-11418-UNEF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.1\/4-18UNEF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-11812-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.1\/8-12UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-1187-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.1\/8-7UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-131612-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.3\/16-12UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-131616-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e13\/16-16UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-13416-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.3\/4-16UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-1386-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.3\u003c\/td\u003e\n\u003ctd\u003e1.3\/8-6UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-151612-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.5\/16-12UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-151612-UN2\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e15\/16-12UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-151620-UN3\u003c\/td\u003e\n\u003ctd\u003eNO GO, 3A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.5\/16–12UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-15812-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.5\/8-12UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-15812-UN3\u003c\/td\u003e\n\u003ctd\u003eNO GO, 3A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.5\/8–12UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-171612-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.7\/16-12UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-171616-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.3\u003c\/td\u003e\n\u003ctd\u003e1.7\/16-16UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-17812-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.7\/8-12UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-17820-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e1.7\/8-20UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-20016-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e2-16UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-21212-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e2.1\/2-12UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-21216-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e2.1\/2-16UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-21812-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e2.1\/8-12UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-31212-UN\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e3.1\/2-12UN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-51618-UNC\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e5\/16-18UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-51624-UNF\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi b1.2\u003c\/td\u003e\n\u003ctd\u003e5\/16-24UNF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e538-51640-UNS\u003c\/td\u003e\n\u003ctd\u003eNO GO, 2A, Ansi 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