NPT

GP General Purpose Series

SP Straight Fluted Taps for American Taper Pipe Threads

3P

SL HSS-E

THCHT

PO Recommended Tapping Speeds Depending On Materials

ISO Vc (m/min) ISO Vc (m/min) ISO Vc (m/min)

P1≤5HK1≤5IN2≤5I
P2≤5HK2≤5IN4≤5I
STP3≤5I
P4≤5I

ANSI H 1st choice I suitable ROLL

FEATURES General purpose for blind and through hole application. For steel application at low cutting speed, also suitable for cast iron and non-ferrous materials.

ANSI-NPT

TYPE: US_055 TYPE: US_056 CARBIDE K K DCON DCON

LONG

HAND

TAPS

LK K LK

K THL THL LF LF

NPTTCTR (tolerance)Ø (mm)Hole Ø (mm)CodeTHCHT (chamfer)Basic major Ø (mm)LF ( inch )THL ( inch )LS ( inch )DCON ( inch )K ( inch )LK ( inch )NOFTypeStock
ANSI
1/16-27ANSI G66.05Y83100BR3P7.7702.1250.687-0.310.2340.3754055h
1/8-27ANSI G8.358.39Y83101BR3P10.1172.1250.75-0.440.3280.3754055h
1/4-18ANSI G10.810.85Y83103BR3P13.4262.4371.062-0.560.4210.4374055h
3/8-18ANSI G14.2514.27Y83104BR3P16.8662.5621.062-0.70.5310.54055h
1/2-14ANSI G17.517.6Y83105BR3P20.9803.1251.375-0.690.5150.6254056h
3/4-14ANSI G22.922.91Y83106BR3P26.3253.251.375-0.910.6790.6874056h
1 -11 1/2ANSI G28.7528.78Y83107BR3P32.9343.751.75-1.130.8430.8125056h
1 1/4-11 1/2ANSI G37.437.5Y83108BR3P41.68941.75-1.310.9840.9375056f
1 1/2-11 1/2ANSI G43.543.57Y83109BR3P47.7604.251.75-1.51.12516056f
2 -11 1/2ANSI G55.555.58Y83110BR3P59.7974.51.75-1.881.4061.1256056f

THREADS,

THREAD

MILLS

DIES

CENTER

DRILLS