1/4 RD X 2 X .166 ID
| Part | Length - Overall | Length - Overall | Gender | Material | Diameter - Inside [diameter] | Diameter - Inside [diameter] | Threaded/Unthreaded | Between Board Height | Between Board Height | Type | Diameter - Outside [diameter] | Diameter - Outside [diameter] | Diameter - Outside [diameter] | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RAF Electronic Hardware  | 2 in  | 50.8 mm  | Female  | Aluminum  | 4.22 mm  | 0.166 in  | Unthreaded  | 2 in  | 50.8 mm  | Round Spacer  | 6.35 mm  | 0.25 in  | 0.25 in  |