Description
INSIZE AMERICAN STANDARD THREAD RING GAGE — 4121 Series
Select the required configuration to see its part number, price, and specifications. The photograph represents the product family; use the selected part specifications to confirm the required size and model. Availability, shipping, tax, and final pricing are confirmed with your quote.
Configurations and manufacturer part numbers
| Configuration | Part number |
|---|---|
| GO, 10-32UNF — 4121-102 | 4121-102 |
| NO GO, 10-32UNF — 4121-102N | 4121-102N |
| GO, 1/2-13UNC — 4121-1A1 | 4121-1A1 |
| NO GO, 1/2-13UNC — 4121-1A1N | 4121-1A1N |
| GO, 1/2-20UNF — 4121-1A2 | 4121-1A2 |
| NO GO, 1/2-20UNF — 4121-1A2N | 4121-1A2N |
| GO, 1/4-20UNC — 4121-1B1 | 4121-1B1 |
| NO GO, 1/4-20UNC — 4121-1B1N | 4121-1B1N |
| GO, 1/4-28UNF — 4121-1B2 | 4121-1B2 |
| NO GO, 1/4-28UNF — 4121-1B2N | 4121-1B2N |
| GO, 3/4-10UNC — 4121-3B1 | 4121-3B1 |
| NO GO, 3/4-10UNC — 4121-3B1N | 4121-3B1N |
| GO, 3/4-16UNF — 4121-3B2 | 4121-3B2 |
| NO GO, 3/4-16UNF — 4121-3B2N | 4121-3B2N |
| GO, 3/8-16UNC — 4121-3C1 | 4121-3C1 |
| NO GO, 3/8-16UNC — 4121-3C1N | 4121-3C1N |
| GO, 3/8-24UNF — 4121-3C2 | 4121-3C2 |
| NO GO, 3/8-24UNF — 4121-3C2N | 4121-3C2N |
| GO, 4-40UNC — 4121-41 | 4121-41 |
| NO GO, 4-40UNC — 4121-41N | 4121-41N |
| GO, 5/8-11UNC — 4121-5C1 | 4121-5C1 |
| NO GO, 5/8-11UNC — 4121-5C1N | 4121-5C1N |
| GO, 5/8-18UNF — 4121-5C2 | 4121-5C2 |
| NO GO, 5/8-18UNF — 4121-5C2N | 4121-5C2N |
| GO, 5/16-18UNC — 4121-5D1 | 4121-5D1 |
| NO GO, 5/16-18UNC — 4121-5D1N | 4121-5D1N |
| GO, 5/16-24UNF — 4121-5D2 | 4121-5D2 |
| NO GO, 5/16-24UNF — 4121-5D2N | 4121-5D2N |
| GO, 6-32UNC — 4121-61 | 4121-61 |
| NO GO, 6-32UNC — 4121-61N | 4121-61N |
| GO, 7/16-20UNF — 4121-7D2 | 4121-7D2 |
| NO GO, 7/16-20UNF — 4121-7D2N | 4121-7D2N |
| GO, 8-32UNC — 4121-81 | 4121-81 |
| NO GO, 8-32UNC — 4121-81N | 4121-81N |
| GO, 9/16-18UNF — 4121-9D2 | 4121-9D2 |
| NO GO, 9/16-18UNF — 4121-9D2N | 4121-9D2N |





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