Legend
1. Worked material
![](https://g25.com.pl/wp-content/uploads/2019/08/LEGENDA.png)
![](https://g25.com.pl/wp-content/uploads/2019/08/p.png)
ISO P & #8211; steel
![](https://g25.com.pl/wp-content/uploads/2019/08/n-1.png)
ISO N & #8211; non-ferrous metals
![](https://g25.com.pl/wp-content/uploads/2019/08/s.png)
ISO S & #8211; heat resistant super alloys
![](https://g25.com.pl/wp-content/uploads/2019/08/kr.png)
recommended
![](https://g25.com.pl/wp-content/uploads/2019/08/k.png)
ISO K & #8211; cast iron
![](https://g25.com.pl/wp-content/uploads/2019/08/h.png)
ISO H & #8211; hardened steel
![](https://g25.com.pl/wp-content/uploads/2019/08/m.png)
ISO M & #8211; stainless steels
![](https://g25.com.pl/wp-content/uploads/2019/08/polkro.png)
admissible
2. Material of the cutting part
![](https://g25.com.pl/wp-content/uploads/2019/08/hsse-pm.png)
high speed powder steel with cobalt content
![](https://g25.com.pl/wp-content/uploads/2019/08/hssco5-1.png)
high speed steel with cobalt content
![](https://g25.com.pl/wp-content/uploads/2019/08/hss.png)
standard high speed steel
![](https://g25.com.pl/wp-content/uploads/2019/08/hsse.png)
high speed steel with cobalt content
![](https://g25.com.pl/wp-content/uploads/2019/08/vhm.png)
solid carbide tools
![](https://g25.com.pl/wp-content/uploads/2019/08/hss-g.png)
high speed steel ground
3. ISO standard
![](https://g25.com.pl/wp-content/uploads/2019/08/din371.png)
HA straight cylindrical shank
![](https://g25.com.pl/wp-content/uploads/2019/08/din6535ha.png)
HA straight cylindrical shank
![](https://g25.com.pl/wp-content/uploads/2019/08/din338.png)
twist drill with cylindrical shank
![](https://g25.com.pl/wp-content/uploads/2019/08/din345.png)
twist drill with Morse taper & #8217; a
![](https://g25.com.pl/wp-content/uploads/2019/08/din374.png)
tool made according to DIN 374
![](https://g25.com.pl/wp-content/uploads/2019/08/DIN-376.png)
tool made according to DIN 376
![](https://g25.com.pl/wp-content/uploads/2019/08/din333a.png)
tool made according to DIN 333
![](https://g25.com.pl/wp-content/uploads/2019/08/din374.png)
tool made according to DIN 374
![](https://g25.com.pl/wp-content/uploads/2019/08/DIN-376.png)
tool made according to DIN 376
![](https://g25.com.pl/wp-content/uploads/2019/08/din333a.png)
tool made according to DIN 333
4. Coatings
![](https://g25.com.pl/wp-content/uploads/2019/08/tn.png)
TiALN + Tin
![](https://g25.com.pl/wp-content/uploads/2019/08/hl.png)
TiALN + WC / C
![](https://g25.com.pl/wp-content/uploads/2019/08/tialn.png)
aluminum titanium nitride
![](https://g25.com.pl/wp-content/uploads/2019/08/tin.png)
titanium nitride
![](https://g25.com.pl/wp-content/uploads/2019/08/ox.png)
oxidised coating
![](https://g25.com.pl/wp-content/uploads/2019/08/tcn.png)
TiN + TiCN
![](https://g25.com.pl/wp-content/uploads/2019/08/atn.png)
AlTiN
![](https://g25.com.pl/wp-content/uploads/2019/08/hc.png)
covered
![](https://g25.com.pl/wp-content/uploads/2019/08/hw.png)
uncoated
5. Additional markings
![](https://g25.com.pl/wp-content/uploads/2019/08/wk.png)
twist drill
![](https://g25.com.pl/wp-content/uploads/2019/08/walec.png)
cylindrical handle
![](https://g25.com.pl/wp-content/uploads/2019/08/stozek-morsa.png)
Morse taper & #8217; a
![](https://g25.com.pl/wp-content/uploads/2019/08/118.png)
blade angle
![](https://g25.com.pl/wp-content/uploads/2019/08/25-30.png)
range of helix angle
![](https://g25.com.pl/wp-content/uploads/2019/08/35.png)
helix angle
![](https://g25.com.pl/wp-content/uploads/2019/08/ik.png)
internal cooling
![](https://g25.com.pl/wp-content/uploads/2019/08/5xd.png)
working part length
![](https://g25.com.pl/wp-content/uploads/2019/08/luk60.png)
countersinking angle
![](https://g25.com.pl/wp-content/uploads/2019/08/z4.png)
number of cutting blades
![](https://g25.com.pl/wp-content/uploads/2019/11/z3.png)
number of cutting blades
![](https://g25.com.pl/wp-content/uploads/2019/08/n.png)
type N & #8211; cutting materials with normal strength and hardness
If something seems incomprehensible please contact us.