JIS SP

SpiralFlutedTaps

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

●ThespiralflutesoftheSPtappullthesmallcontinuouscurlychipsback

towardsthetappingchuckandpreventschipsfromclogginginthehole. Thesetapsareidealforblindholetapping. ●Thesetapscuteasilyintosoftermaterials. ●Intermittentcuttingintopilotholeswithakeywayorgroovesispossible.

●TheflutestrengthisinferiortotheHTtap.TheHTfluteshapeismoresuitable

forhighhardnessmaterials. Chip evacuation with a SP tap.

The difference between a SP tap and a + SP tap

SPForlowspeedmachiningondrilling+SPMediumspeedmachining/Synchronousfeed
machinesandmachiningcenters.tappingisrecommendedonMachiningCenters.
Standard tap series SP (for blind holes).Plus series + SP for blind holes.
Old nameNew Name Size RangeOld NameNew NameSize Range
N-SPSP M1.2〜M64N+SP+SPM2〜M12
Effective tapping on drill machines.Effective for use with synchronous feed (rigid) tapping
on CNC machining centers.
* Both are general purpose spiral flute taps developed for varying tapping environments.
Speed chart
SlowTapping SpeedFast
HardHard

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

Work Piece Material Perfect synchronous feed territory Work Piece Material

AlloySCMSCMAlloy
SteelSCrSCrSteel
HighS55CS55CHigh
CarbonCarbon
SteelS45CS45CSteel
S45CS45C
MediumMedium
Carbon+SPCarbon
SteelSPSteel

S30C S30C

S30C S30C Low Low Carbon Carbon Steel Steel SS400 SS400

Soft Soft

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

Tappingspeedrangebytapseries.