| CHAIN | NOT INCLUDEDNOT INCLUDED |
| DIAMETER | 0.750 INCHES NOMINAL0.750 INCHES NOMINAL |
| FSC APPLICATION DATA | CAP FOR CRYSTAL HOLDERCAP FOR CRYSTAL HOLDER |
| INSERT | NOT INCLUDEDNOT INCLUDED |
| LENGTH | 0.562 INCHES NOMINAL0.562 INCHES NOMINAL |
| MATERIAL | COPPER ALLOY BODYCOPPER ALLOY BODY |
| MOUNTING METHOD | THREADTHREAD |
| PRECIOUS MATERIAL AND LOCATION | BODY SURFACE SILVER AND BODY SURFACE SILVER AND BODY SURFACE RHODIUMBODY SURFACE RHODIUM |
| PRECIOUS MATERIAL | SILVER AND SILVER AND RHODIUMRHODIUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-S-365 FED SPEC 1ST TREATMENT RESPONSEQQ-S-365 FED SPEC 1ST TREATMENT RESPONSE |
| SURFACE TREATMENT | SILVER AND SILVER AND RHODIUMRHODIUM |
| THREAD SIZE | 5/8-32 UNS 2B5/8-32 UNS 2B |