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Machine screw tap HSCo blue ring through hole DIN 371/376
The blue ring machine tap for general, wide-ranging applications in long-chipping, non-alloyed steels up to a strength of 850 N/mm².
- Thread type: Metric thread
- Material to be processed: Steel
- Hole type: Clearance hole ≤ 3xD
- Suitable for machine type: Milling/drill center, Pedestal drilling machine
- Quality: ZEBRA-Premium
- Cutting material: HSCo
- Surface: Plain
- Form: B
- Shank style: Cylindrical with square drive
- Tolerance of screw taps: ISO 2 (6H)
- Suitable for tensile strength up to: 850 N/mm²
- Service life (points system): 2 of 4 points
- Trueness to gauge (points system): 4 of 4 points
- Versatility (points system): 1 of 4 points
- Cutting behaviour (points system): 3 of 4 points
- Chip formation (points system): 2 of 4 points
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Structure of our article numberThe article number is made up of the following: VVVVAAABBB
VVVV = 4 digits for prefix number (please note that the first digit is currently always 0)
AAA = 3 digits for dimension part 1
BBB = 3 digits for dimension part 2
Example article number structures:
Example 1: Screw with dimensions of 4x10 mm:
00574 10 (2 spaces between the 4 and the 10)
Example 2: Screw with dimensions of 10x20 mm:
005710 20 (1 space between the 10 and the 20)
Example 3: Flat washer with an internal diameter of 6 mm:
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- Cutting geometry precisely tailored to steel materials
- Sufficient coolant and lubricant must be added when cutting threads.
- For the machine tap/material assignments, see the overview tables
Before reversing the screw tap, the entire spiral point of the tool must be removed from the drill hole. Failure to do so may cause cutting edges to chip or the tool to break.
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