Broca avellanadora de acero
Need Stable Countersink Drill Bits for Smooth Finishing in Bulk Supply?
- Sharp cutting edges support smooth deburring performance
- Precision angle control totally meet your needs
- Stable production and strict inspection
- OEM for global brands
- OEM & Custom Support
- Exhibition
- Certificado
- Detalles de producto
OEM Countersink Drill Bits for Your Brand
- Laser logo marking (We support laser or engrave brand name on the shank)
- Custom packaging (Plastic box, metal box, Blister card, all available with your brand name and logo)
- Angle customization (0°/ 60° / 82° / 90° and others)
- Surface finish (Silver, Titanium coated, amber, black oxide, etc)



HSS 4241 vástago cilíndrico mejor broca avellanadora con ángulo de corte de 90 grados
- El vástago liso y recto permite un fácil acoplamiento.
- Tres flautas diseñadas para reducir la obstrucción, mejorar el espacio libre y evitar vibraciones.
- El material HSS 4241 aumenta la dureza.
- Se puede utilizar como herramienta de desbarbado.
- Corte superior en metal.
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Descripción del producto
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Más opciones para usted: Hogar > Broca avellanadora
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nombre del producto
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HSS 4241 vástago cilíndrico mejor broca avellanadora con ángulo de corte de 90 grados
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Tamaño
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0,1,3,5,6,7
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Material
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HSS 4241
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Tipo de flauta
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3 flauta
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Ángulo de corte
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90 ° (también tiene 120 °, 62 °, 82 °)
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Caña
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Vástago cilíndrico (también tiene vástago hexagonal, vástago cónico Morse)
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Tipo de mango
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Oro con Plata
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Paquete
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6 piezas en una caja de plástico
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Rasgo
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1. El vástago liso y recto permite un fácil acoplamiento 2. Diseño de tres flautas para reducir las obstrucciones, mejorar el espacio libre y evitar vibraciones
3. El material HSS 4241 aumenta la dureza.
4. Se puede utilizar como herramienta de desbarbado.
5. Corte superior en metal
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Tamaño
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L1 (mm)
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L2 (mm)
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D1 (mm)
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D2 (mm)
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Escribe
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6,3 × 60 °
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45
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6.3
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6.3
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5
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Ⅰ
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8×60°
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50
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8.0
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8
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6
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10,4 × 60 °
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50
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10
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10.4
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6
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12,5 × 60 °
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56
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11.2
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12.5
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8
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16×60°
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63
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14
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16
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10
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20×60°
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67
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17
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20
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10
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25×60°
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71
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21.5
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25
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10
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30×60°
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73
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26
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30
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12
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31×60°
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73
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27
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31
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12
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35×60°
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82
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31
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35
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12
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40×60°
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92
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36
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40
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12
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Ⅱ
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50×60°
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100
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45
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50
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12
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60×60°
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120
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54
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60
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12
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4,6 × 60 °
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40
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3.5
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4.3
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4
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Ⅰ
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5×90°
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40
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4
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5
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4
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5,3×90°
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40
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4
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5.3
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4
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5,8×90°
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45
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4.5
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5.8
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5
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6×90°
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45
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4.5
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6
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5
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6,3×90°
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45
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5.0
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6.3
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5
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7×90°
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50
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5.0
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7
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6
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7,3×90°
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50
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5.6
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7.3
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6
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8×90°
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50
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5.6
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8
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6
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Tamaño
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L1 (mm)
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L2 (mm)
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D1 (mm)
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D2 (mm)
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Escribe
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8,3×90°
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50
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6
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8.3
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6
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Ⅰ
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9,4×90°
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50
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6.7
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9.4
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6
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10×90°
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50
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7.1
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10
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6
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10,4×90°
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50
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7.1
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10.4
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6
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11,5×90°
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56
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7.5
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11.5
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8
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12,4×90°
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56
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8
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12.4
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8
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13,4×90°
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56
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8.5
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13.4
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8
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15×90°
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60
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9
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15
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10
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16,5×90°
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60
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10
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16.5
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10
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19×90°
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63
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11.2
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19
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10
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20,5×90°
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63
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12.5
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20.5
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10
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23×90°
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67
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13.2
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23
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10
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25×90°
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67
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15
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25
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10
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26×90°
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67
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15
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26
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10
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28×90°
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71
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16
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28
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12
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30×90°
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71
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18
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30
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12
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31×90°
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71
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18
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31
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12
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35×90°
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82
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21
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35
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12
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Ⅱ
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40×90°
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92
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23
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40
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12
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50×90°
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100
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28.5
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50
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12
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60×90°
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120
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33.8
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60
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12
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* Custom-sastre estaría disponible contra los requisitos de los clientes
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Productos relacionados
Frequently Asked Questions
Q: How to Countersink with Drill Bit?
A: To countersink with a drill bit, first drill a pilot hole, then use a countersink bit to create a conical recess for the screw head. Operate at low speed and pressure to get a smooth finish.

Q: What is a Countersink Drill Bit?
A: A countersink drill bit is a cutting tool designed to create a beveled hole. It is commonly used in woodworking and metalworking for clean finishes.
Q: What Size Countersink to Use?
A: The correct countersink size depends on the screw head diameter and angle. Matching the bit size is very important, it ensures a professional clean result.
Q: What are Common Countersinking Mistakes?
A: Common mistakes include using fast speed, apply too much pressure, selecting the wrong angle, and drilling too deep. These errors can cause rough edges, uneven finishes, or oversized holes.
Q: How Deep can you Countersink a Screw?
A: The countersink depth should be just enough for the screw head to sit flush or slightly below the surface.
Q: Do I Need to Lubricate when Countersinking?
A: Lubrication is recommended when countersinking metal to reduce heat and improve surface finish. For wood, lubrication is usually not necessary.







