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Spiral Flute (BLF) - 'Biteless Flat' ISO Metric Coarse
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.
'Biteless Flat' ISO Metric Coarse
Helix angle 45.
| Shank Diameter | 4.5mm |
| Helix Angle | 45 |
| Thread Length | 7mm |
| Thread Direction | Right Hand |
| Thread Size | M4 |
| Ring Colour | Blue |
| Coolant Delivery | External |
| Material | Vanadium High Speed Steel |
| Square Width | 3.4mm |
| Material Application | Stainless Steels |
| Finish/Coating | Steam Tempered |
| Pitch | 0.7 |
| Tap Type | Spiral Flute |
| Tapping Depth | 10mm |
| Class of Fit | 6H |
| Number of Flutes | 3 |
| Thread Standard | Metric Coarse |
| Dimensions Standard | DIN 371 |
| Overall Length | 63mm |
| Threading Tap Type | Machine Tap |
| Material Grade | M35 |
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