Counterbores

Counterbore, or counterbore cutters, are drill-bits used to make counterbore holes, which is a way of creating a flat-bottomed extension of an existing hole in a material. The counterbore cutter will essentially create a cylindrical cavity at the head of an already drilled hole. This allows the hole to accommodate flat bottomed screw or bolts so that they sit flush to the surface of the material, rather than protruding, while still able to perform their function to the fullest.

The reasons for desiring a counterbore of sunken screw are many. There are aesthetic reasons a manufacturer may want to hide the fixings, in furniture for example, but there are also aerodynamic reasons that are applicable to the aerospace industry.

Counterbores will often be made to be slightly larger than an accommodating bolt, to allow the use of socket wrenches or even screw caps.

Features and Benefits:
•Able to be used with conventional power tools


•No protruding fixings


•Increase aesthetic appeal of finished product

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M5 5.3mm 6.5mm 10mm 12.5mm Screwed 6 mm 70 mm HSS
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₩21,321.80
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M4 4.5mm - 8mm 14mm Plain 5 mm 71 mm HSS
RS 제품 번호 522-7474
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₩45,216.60
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M10 10.5mm 11mm 18mm 19mm Screwed 10 mm 89 mm HSS
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M6 6.4mm 8mm 11mm 12.5mm Screwed 6 mm 76 mm HSS
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M6 6.6mm - 11mm 18mm Plain 8 mm 80 mm HSS
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₩42,316.55
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M10 11mm - 18mm 22mm Plain 12.5 mm 100 mm HSS
RS 제품 번호 522-7480
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₩58,562.10
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M12 13mm 13.5mm 20mm 25.5mm Screwed 12 mm 108 mm HSS
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₩33,683.05
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M8 9mm - 15mm 22mm Plain 12.5 mm 100 mm HSS
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M3 3.4mm - 6mm 14mm Plain 5 mm 71 mm HSS
RS 제품 번호 522-7424
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₩24,420.25
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M4 4.3mm 5.5mm 8mm 12.5mm Screwed 6 mm 65 mm HSS
RS 제품 번호 132-031
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₩52,196.25
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M12 14mm - 20mm 22mm Plain 12.5 mm 100 mm HSS