Our HSS drill bit with a diameter of 8.0mm is ideal for sliding point drilling of our plastic panels during assembly with our facade and balcony screws. The drill is also a very good choice for our façade rivets if the panels are to be fastened to an aluminium construction with riveted joints without forcing. The drill bit is a precision-ground drill, in which both the flute and the cutting edge of the drill are sharpened to a greater degree. The tip of the drill is also ground and has a cross-grinding, which offers the significant advantage that the drill is self-centring, which is particularly noticeable in the form of precise drilling with less effort.
The drill according to DIN 338 is made of high-speed steel and has a normal spiral twist (type N). The drill tip with an angle of 118 degrees is cross-ground, so that the drill cuts already in the middle of the drill tip. The effective length of the drill helix is 75mm. The cylindrical shank with a diameter of 8mm has a length of 42mm, resulting in a total length of 117mm.
The HSS-G drill is a profile-ground drill type which is milled from one piece. Compared to the cheaper variant of the roll-rolled HSS-R drills, ground drills not only have a better sharpness on the cutting edges and drill head, but also have a longer service life. This makes HSS-G drills the better choice, especially when drilling hard metals, and they become blunt less quickly, which is why we do not sell HSS-R drills. Instead, we not only offer our 8mm drill at a very reasonable price from one copy upwards, but also grant generous quantity discounts when purchasing ten or more drills.
Scope of delivery:
- 1 x HSS-Drill in Ø 8,0mm
TIP: If a drill bit shows damage to the drill tip or the drill helix, it should no longer be used, as this can have a negative effect on the quality of the hole.
- Ø Drilling hole: 8,0mm
- Ø Shank: 8,0mm
- Drill: Twist drill
- Standard: DIN 338
- Spiral length: 75mm
- Total length: 117mm
- Mounting: Straight shank
- Direction of rotation: Clockwise
- Material: High-speed steel (HSS)
- Point angle: 118°
- Cut: Cross-grinding
- Type: N (normal twist drill)
Fixed points and sliding points are required for façade cladding or balcony surrounds that are to be constructed with aluminium composite panels or other plastic panels. While the fixed points must always be drilled to match the fixing material, a hole diameter of at least 8mm is recommended for sliding points. For such gliding point drillings, our HSS spiral drill in 8.0mm is ideal, because the drill hole offers sufficient clearance for the expansion of a plastic panel, which can occur through the effect of heat. However, the drill bit made of high-speed steel is only suitable to a limited extent for facade panels made of HPL plastic, as the drill would lose its sharpness very quickly due to the very high hardness of HPL panels. In this case we recommend our HPL drill made of solid carbide, which also has the advantage that clean drill hole edges are guaranteed due to the special drill head geometry.
For the installation of wall signs with our high-quality stainless steel spacers, the plates must be drilled in advance so that the cover cap can be screwed or inserted into the steel sleeve through the hole. The drill with a diameter of 8mm is perfectly suitable for our screwable spacers in the sizes 10x15mm and 13x13mm, as well as the spacer with grub protection in 13x13mm. The diameter of 8mm is also ideal for the screw head cover made of stainless steel, as holes in this size are completely covered by the stainless steel cover. For the spacers with 15mm diameter, however, a larger drill is required.
HSS-G drills are mainly used for drilling metals and therefore our 8mm twist drill is also excellently suited for drilling steel, cast steel, malleable cast iron, grey cast iron, iron, aluminium and many other metals. Please note that the speed of rotation must be reduced with increasing drill size to prevent the drill from annealing. Cooling with a cutting oil or drill paste can also help to reduce the wear of the drill bit. Cooling an HSS drill bit is particularly useful for thicker thicknesses or hard materials, even if HSS drills are characterised by very long tool life.
WARNING: For percussion screwdrivers, the setting should be selected for drilling without impact in order not to damage the drill.