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Spiral Flute (BLF) - UNC
HSS-EV Oxidised Finish. For shorter blind holes. Taper lead to DIN form C (3 x P). Tapping tolerance to 6H. Manufactured to DIN 371/376.
UNC - Unified National Coarse Bright Finish
Tapping tolerance to 2B.
| Ring Colour | Blue |
| Overall Length | 80mm |
| Thread Direction | Right Hand |
| Thread Length | 17mm |
| Material | Vanadium High Speed Steel |
| Tap Type | Spiral Flute |
| Product Type | Taps |
| Finish/Coating | Bright |
| Class of Fit | 2B |
| Thread Standard | UNC |
| Pitch | 20 |
| Dimensions Standard | DIN 371 |
| Helix Angle | 45 |
| Square Width | 3.4mm |
| Coolant Delivery | External |
| Thread Size | 1/4\ |
| Material Application | Stainless Steels |
| Teeth per Inch | 20 |
| Material Grade | M35 |
| Number of Flutes | 3 |
| Shank Diameter | 7mm |
| Tapping Depth | 15.75mm |
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