Product Description
| Head type (Alternate name) |
Countersunk (Flat) |
| Size | 3/8 BSF (BSF = British Standard Fine) |
| Shank diameter, nominal | 3/8" |
| Pitch | 20 tpi |
| Length (measured from the top of the head) |
1" |
| Drive | Slot |
| Material | Steel |
| Finish | Zinc plated |
| Head diameter, max. | 0.656" |
| Head angle | 90 degrees |
| Standard | BS450:1958 |
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