HSS SMART STEP combination tap bit
Combination screw tap bit HSS SMART STEP
MATAP-COMBI-BIT-HSS-SMARTSTEP-M4
ZEBRA SMART STEP
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3 in 1: drilling, thread cutting and countersinking/deburring in one work step
No tool change required, saving time and costs
The first combination screw tap with stepped drill bit tip geometry
- Work up to 100 % faster than with conventional HSS combination screw taps
- Optimal centring even when working on curved surfaces
- High-precision, circular drilling as ideal preparation for the quality of subsequent thread cutting
- Effortless drilling
True-to-the-gauge through hole thread according to ISO 2 (6H)
1/4 inch hexagon mount
Prevents spinning in the drill chuck, ensures optimal power transmission and protects the drill chuck from damage
Product packaging made of 100 % PCR (recycled plastic from household waste), 100 % recyclable and Cradle to Cradle Certified® Bronze
Available exclusively from Würth
- Generally only suitable for through hole threads with a material thickness of max. 1xD
- Countersinks according to DIN74-1 for countersunk head screws (according to DIN 7991) are not possible
- For use in cordless drill drivers, handheld drills, drill presses and on pillar drills.
Datasheets(X)
- Perfect for through holes in aluminium, brass and plastics up to 1xD (e.g. M6 = 6 mm material thickness).
- Also ideal for machining sheet metal made from unalloyed and alloyed steels up to 600 N/mm², and from malleable iron
- Significantly reduce the rotation speed for thread cutting and countersinking/deburring after drilling. The recommended cutting parameters for the various materials and tool diameters can be found in the cutting parameter overview.
- Use sufficient coolant and lubricant.
- Ensure to work perpendicular to the material. Avoid tilting: Risk of tool breakage!
- All threads of the combination screw tap must be through and out of the hole before reversing it. Otherwise the tool or the cutting edges might break.
Thread type x nominal diameter | M4 |
Thread type | Metric thread |
Material to be processed | Non-ferrous metal |
Hole type | Clearance hole ≤ 1xD |
Quality | ZEBRA-Premium |
Suitable for machine type | Drill |
Pitch | 0.7 mm |
Length | 40 mm |
Shank diameter | 7.18 mm |
Cutting material | HSS |
Surface | Plain |
Shank style | Hexagon |
Tolerance of screw taps | ISO 2 (6H) |
Service life (points system) | 2 of 4 points |
Trueness to gauge (points system) | 4 of 4 points |
Versatility (points system) | 2 of 4 points |
Cutting behaviour (points system) | 3 of 4 points |
Chip formation (points system) | 4 of 4 points |
Suitable for tensile strength up to | 600 N/mm² |
Material of sub-group | General structural steels |
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