JIS PO

Spiral Pointed Taps

Specification

Recommended Tapping Speeds depending on Materials

Medium carbon steels High carbon steels

5中炭素鋼10 5高炭素鋼10

(m/min) (m/min)

Product Features

  • The chips from the tap's cutting chamfer are pushed forward. This is optimal for through hole tapping where there are no obstructions created by the chip.

●Straight flutes are shallow so the taps strength is very high.

Comparison of a PO and + PO tap Chips discharge of a PO tap

POFor low-speed machining on drilling+POFor CNC Machining center at medium speed
machines and CNC machining centersmachining. Synchronous feed is recommended.
Standard tap series PO for through holes.Plus series + PO for through holes.
Old NameNew Name Size RangeOld NameNew NameSize Range
N-POPO M1.2〜M50N+PO+POM3〜M6
The PO and +PO use similar wording but have differentThe PO and +PO use similar wording but have different
meanings.meanings.
* Both are general-purpose spiral point taps developed for the processing environment of our customers.
Application chart
SlowTapping SpeedFast
HardHard

5m/min 10m/min 15m/min 20m/min

Work piece Material Fully synchronous feed area Work piece Material

AlloySCMSCMAlloy
SteelSCrSCrSteel
HighS55CS55CHigh
CarbonCarbon
SteelS45CS45CSteel
S45CS45C
MediumMedium
Carbon+POCarbon
SteelS30CPO S30CSteel

S30C S30C Low Low Carbon Carbon Steel Steel

SS400 SS400

Soft Soft

5m/min 10m/min 15m/min 20m/min

It is an image diagram of a processable range.