BSW Thread Ring Gage Set
BSW Thread Ring Gage Set are precision instruments used to check the external threads of fasteners manufactured to British Standard Whitworth (BSW) specifications. They provide a fast and reliable go/no-go inspection method to ensure thread accuracy, reducing failure in mechanical assemblies. Popular in vintage machinery restoration and British engineering applications, these gages help confirm that manufactured threads comply with critical tolerances. This specific listing is item #25 in our catalog.
| part | BSWTRGS4 |
| size | 5/16 |
| TPI | 18 |
