Machine Tap DIN 374 Form C HSSE left hand thread - BSC 9/16 x 20 LH by VÖLKEL, item no. 79424, suitable for cutting internal threads.
Use this machine tap for internal thread production in workshop processes where repeatability and clean lead-in are required. The thread designation is BSC 9/16 x 20 LH.
If you tap in series, keep cutting fluid consistent and monitor chip evacuation so the thread form stays within tolerance. The execution follows DIN 374. Form C defines the chamfer and lead-in behavior.
Note Use cutting fluid suited to the workpiece material and keep the tool clean and protected after use.
Scope of supply is not specified in the provided product data for this item.
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| Type of thread | British Cycle Thread |
|---|---|
| Standard | DIN 374 |
| Form | Form C |
| Material | HSSE |
| Tolerance | medium |
| Size | BSC 9/16 x 20 LH |
| Overall length (L1) | 100 mm |
| Thread length (L2) | 22 mm |
| Core hole diameter (D1) | 13.1 mm |
| Shank diameter (D2) | 11.0 mm |
| Drive connector | 9.0 mm |
| EAN | 4022835794240 |
| Item number | 79424 |
| Type of flute | straight fluted |
| Application | for through and blind holes |
| Thread standard | BS 815 |









