HSS 90° yellow-ring countersink DIN 335C
Conical countersink HSS, yellow ring
CNTSNK-CONI-MA-YELLOW-HSS-90DGR-D20,5MM
ZEBRA
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Burr- and chatter-free countersinking and deburring
Precision conical countersink with 3 cutting edges, precision-ground
Optimised spiral flute geometry
Excellent chip formation and removal
Sustainable product packaging made from 100 % PCR (recycled plastic from household waste), 100 % recyclable and Cradle to Cradle Certified® in Bronze
Datasheets(X)
Material to be processed | Aluminium |
Quality | ZEBRA-Premium |
Spot-facer diameter (d1) | 20.5 mm |
Shank diameter (d2) | 10 mm |
Tip diameter (d3) | 3.5 mm |
Length (l1) | 63 mm |
Number of cutting edges (Z) | 3 PCS |
Standards | DIN 335 |
Form | C |
Cutting material | HSS |
Countersink angle | 90 Degree |
Surface | Uncoated |
Shank style | Cylindrical |
Service life (points system) | 2 of 4 points |
Countersinking speed (point system) | 2 of 4 points |
Countersinking quality (point system) | 2 of 4 points |
Versatility (points system) | 1 of 4 points |
Countersinking behaviour (point system) | 2 of 4 points |
Material of sub-group | Aluminium |
Assignment of conical countersink to screw standards | ||
Conical countersink nominal diameter d1 | For countersunk head screws | For countersunk head screws |
DIN EN ISO 10642 (formerly DIN 7991) | DIN EN ISO 2009, 2010, 7046, 7047 (formerly DIN 963,964,965,966) | |
6.3 mm | M3 | M3 |
8.3 mm | M4 | - |
10.4 mm | M5 | M4, M5 |
12.4 mm | M6 | M6 |
16.5 mm | M8 | M8 |
20.5 mm | - | M10 |
25.0 mm | M10, M12 | M12 |
31.0 mm | M16 | - |
Cutting values for HSS countersinks | ||||||
For dia. 6.3–12.4 | ||||||
Material designation | Tensile strength | vc | f | |||
Dia. 6.3 | Dia. 8.3 | Dia. 10.4 | Dia. 12.4 | |||
Aluminium and aluminium alloys | ≤ 400 N/mm² | 90 | 0,150 | 0,160 | 0,170 | 0,190 |
Wrought aluminium alloys | ≤ 650 N/mm² | 70 | 0,150 | 0,160 | 0,170 | 0,190 |
Cast aluminium alloys ≤ 10% Si | ≤ 600 N/mm² | 40 | 0,120 | 0,130 | 0,140 | 0,150 |
Cast aluminium alloys > 10% Si | ≤ 600 N/mm² | 30 | 0,120 | 0,130 | 0,140 | 0,150 |
Magnesium alloys | ≤ 400 N/mm² | 100 | 0,150 | 0,160 | 0,170 | 0,190 |
Copper, low-alloyed | ≤ 500 N/mm² | 60 | 0,150 | 0,160 | 0,170 | 0,190 |
Brass, short-chipping | ≤ 600 N/mm² | 80 | 0,150 | 0,160 | 0,170 | 0,190 |
Brass, long-chipping | ≤ 600 N/mm² | 50 | 0,150 | 0,160 | 0,170 | 0,190 |
Bronze, short-chipping | ≤ 600 N/mm² | 30 | 0,150 | 0,160 | 0,170 | 0,190 |
≤ 850 N/mm² | 26 | 0,150 | 0,160 | 0,170 | 0,190 | |
Bronze, long-chipping | ≤ 850 N/mm² | 24 | 0,150 | 0,160 | 0,170 | 0,190 |
≤ 1000 N/mm² | 20 | 0,150 | 0,160 | 0,170 | 0,190 | |
Plastics | ≤ 150 N/mm² | 30 | 0,150 | 0,160 | 0,170 | 0,190 |
For dia. 16.5–31 | ||||||
Material designation | Tensile strength | vc | f | |||
Dia. 16.5 | Dia. 20.5 | Dia. 25 | Dia. 31 | |||
Aluminium and aluminium alloys | ≤ 400 N/mm² | 90 | 0,210 | 0,230 | 0,260 | 0,300 |
Wrought aluminium alloys | ≤ 650 N/mm² | 70 | 0,210 | 0,230 | 0,260 | 0,300 |
Cast aluminium alloys ≤ 10% Si | ≤ 600 N/mm² | 40 | 0,170 | 0,180 | 0,210 | 0,240 |
Cast aluminium alloys > 10% Si | ≤ 600 N/mm² | 30 | 0,170 | 0,180 | 0,210 | 0,240 |
Magnesium alloys | ≤ 400 N/mm² | 100 | 0,210 | 0,230 | 0,260 | 0,300 |
Copper, low-alloyed | ≤ 500 N/mm² | 60 | 0,210 | 0,230 | 0,260 | 0,300 |
Brass, short-chipping | ≤ 600 N/mm² | 80 | 0,210 | 0,230 | 0,260 | 0,300 |
Brass, long-chipping | ≤ 600 N/mm² | 50 | 0,210 | 0,230 | 0,260 | 0,300 |
Bronze, short-chipping | ≤ 600 N/mm² | 30 | 0,210 | 0,230 | 0,260 | 0,300 |
≤ 850 N/mm² | 26 | 0,210 | 0,230 | 0,260 | 0,300 | |
Bronze, long-chipping | ≤ 850 N/mm² | 24 | 0,210 | 0,230 | 0,260 | 0,300 |
≤ 1000 N/mm² | 20 | 0,210 | 0,230 | 0,260 | 0,300 | |
Plastics | ≤ 150 N/mm² | 30 | 0,210 | 0,230 | 0,260 | 0,300 |
Legend |
vc = cutting speed [m/min] |
f = feed (mm/r) |
The suggested cutting values are reference values and must be adapted to the respective conditions. |
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