Page 348 - Yamawa_European_Catalogue_YEU21

Straight Fluted Taps

NPT
Intro

GP General Purpose Series
SP Straight Fluted Taps for American Taper Pipe Threads

FEATURES
General purpose for blind and through hole application.
3P
SL HSS-E For steel application at low cutting speed, also suitable for
THCHT cast iron and non-ferrous materials.

Recommended Tapping Speeds Depending On Materials
PO
ISO Vc (m/min) ISO Vc (m/min) ISO Vc (m/min)
P1 ≤5 H K1 ≤5 I N2 ≤5 I
P2 ≤5 H K2 ≤5 I N4 ≤5 I
ST P3 ≤5 I
P4 ≤5 I
ANSI
H 1st choice I suitable
ROLL

ANSI-NPT
TYPE: US_055 TYPE: US_056
CARBIDE K K
DCON DCON

LK K LK
LONG THL THL K
LF LF

HAND
TAPS
Basic
NPT TCTR Ø Hole Ø Code THCHT major Ø LF THL LS DCON K LK NOF Type Stock
(tolerance) (mm) (mm) (chamfer) ( inch ) ( inch ) ( inch ) ( inch ) ( inch ) ( inch )
(mm)
ANSI
EG (STI) 1/16-27 ANSI G 6 6.05 Y83100BR 3P 7.770 2.125 0.687 - 0.31 0.234 0.375 4 055 h
1/8-27 ANSI G 8.35 8.39 Y83101BR 3P 10.117 2.125 0.75 - 0.44 0.328 0.375 4 055 h
1/4-18 ANSI G 10.8 10.85 Y83103BR 3P 13.426 2.437 1.062 - 0.56 0.421 0.437 4 055 h
SPECIAL 3/8-18 ANSI G 14.25 14.27 Y83104BR 3P 16.866 2.562 1.062 - 0.7 0.531 0.5 4 055 h
THREADS,
GAUGES 1/2-14 ANSI G 17.5 17.6 Y83105BR 3P 20.980 3.125 1.375 - 0.69 0.515 0.625 4 056 h
3/4-14 ANSI G 22.9 22.91 Y83106BR 3P 26.325 3.25 1.375 - 0.91 0.679 0.687 4 056 h
1 -11 1/2 ANSI G 28.75 28.78 Y83107BR 3P 32.934 3.75 1.75 - 1.13 0.843 0.812 5 056 h
THREAD 1 1/4-11 1/2 ANSI G 37.4 37.5 Y83108BR 3P 41.689 4 1.75 - 1.31 0.984 0.937 5 056 f
MILLS
1 1/2-11 1/2 ANSI G 43.5 43.57 Y83109BR 3P 47.760 4.25 1.75 - 1.5 1.125 1 6 056 f
2 -11 1/2 ANSI G 55.5 55.58 Y83110BR 3P 59.797 4.5 1.75 - 1.88 1.406 1.125 6 056 f

DIES

CENTER
DRILLS

Technical
info

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