3/8 RD X 7/8 X .218 ID
| Part | Diameter - Outside [diameter] | Diameter - Outside [diameter] | Diameter - Outside [diameter] | Between Board Height | Between Board Height | Between Board Height | Threaded/Unthreaded | Material | Length - Overall | Length - Overall | Length - Overall | Diameter - Inside [diameter] | Diameter - Inside [diameter] | Type | Gender | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RAF Electronic Hardware  | 0.375 in  | 0.375 in  | 9.53 mm  | 0.875 in  | 22.23 mm  | 0.875 in  | Unthreaded  | Aluminum  | 22.23 mm  | 0.875 in  | 0.875 in  | 0.218 in  | 5.54 mm  | Round Spacer  | Female  |